56
1.021, 3.021, 10.333, 22.00 : Introduction to Modeling and Simulation : Spring 2012 Part II – Quantum Mechanical Methods : Lecture 2 Quantum Mechanics: Practice Makes Perfect Jeffrey C. Grossman Department of Materials Science and Engineering Massachusetts Institute of Technology 1

Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

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Citation preview

Page 1: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

1021 3021 10333 2200 Introduction to Modeling and Simulation Spring 2012

Part II ndash Quantum Mechanical Methods Lecture 2

Quantum Mechanics Practice Makes Perfect

Jeffrey C Grossman

Department of Materials Science and Engineering Massachusetts Institute of Technology

1

1 Itrsquos a Quantum WorldThe Theory of Quantum Mechanics

2 Quantum Mechanics Practice Makes Perfect

3 From Many-Body to Single-Particle Quantum Modeling of Molecules

Part II Topics

4 Application of Quantum Modeling of Molecules Solar Thermal Fuels

5 Application of Quantum Modeling of Molecules Hydrogen Storage

6 From Atoms to Solids

7 Quantum Modeling of Solids Basic Properties

8 Advanced Prop of MaterialsWhat else can we do

9 Application of Quantum Modeling of Solids Solar Cells Part I

10 Application of Quantum Modeling of Solids Solar Cells Part II

11 Application of Quantum Modeling of Solids Nanotechnology

2

Motivation electron in box

Image of NGC 604 nebula is in the public domain Source HubbleSpace Telescope Institute (NASA) Via Wikimedia Commons

Image adapted from Wikimedia Commons httpcommonswikimediaorg3

Lesson outline

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

4

ReviewWhy QM

Problems in classical physics that led to quantum mechanics

bull ldquoclassical atomrdquo

bull quantization of properties

bull wave aspect of matter

bull (black-body radiation)

5

Review Quantization photoelectric

Eeeffect

w A

E = n( - A) = h(v - vA)

h = 27n = 66 middot 10-34 Wattsec2

Einstein photon E = nw

__ _ _

__

_ _

____

_

Image by MIT OpenCourseWare

6

ldquoClassical atomsrdquo

+

e -

problem accelerated charge causes radiation atom not stable

hydrogen atom

7

From Wikipedia License CC-BY-SA This content is excluded from our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

ReviewWave aspect

wave character particle character

lightmatter

Image in public domain See Wikimedia Commons

__ _ _

__

_ _

____

_

Image by MIT OpenCourseWare

9

Double-Slit

Courtesy of Bernd Thaller Used with permission

10

ReviewWave aspect

p = nk = A |k|

particle and momentumE p v kwave frequency and wavevector

E = hv = n h k

de Broglie free particle can be described a as planewave with A =

h mv

1(r t) = Aei(kmiddotr-wt)

11

32408 542 PMhoscom2gif 512342 pixels

Page 1 of 1httphyperphysicsphy-astrgsueduhbasequantumimgquahoscom2gif

32408 542 PMhoscom2gif 512342 pixels

Page 1 of 1httphyperphysicsphy-astrgsueduhbasequantumimgquahoscom2gif

Review Interpretation of QM 1(r t) wave function (complex)

|1|2 = 11 interpretation as probability to find particle

11dV = 1

2 (r t) (r t)

Image by MIT OpenCourseWare

12

Wave Particles Hitting a Wall

Courtesy of Bernd Thaller Used with permission

13

Electron WaveParticle Video

Courtesy of cassiopeiaprojectcom

SourceYouTube (cassiopeiaproject) 14

Hamiltonian

Review Schroumldinger equation

second derivative in space a wave equation

first derivative in time

2

2m 2 + V (r t)

(r t) = i

t (r t)

12 - 2 + V (r t) = H =

2m 2 p = -i1p

= + V = T + V2m

15

Schroumldinger

From Wikipedia License CC-BY-SA This content is excluded from our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use16

Review Schroumldinger equation

H time independent 1(r t) = 1(r) middot f(t)

f(t) H1(rr)in = = const = E

f(t) 1(rr)

H (r) = E (r) - i Et (r t) = (r) middot e

time independent Schroumldinger equation stationary Schroumldinger equation

17

Particle in a box Schroumldinger equation

boundary conditions general solution

18

Itrsquos real

Cu-O Bond Ti-O Bond(experiment) (theory) Reprinted by permission from Macmillan Publishers Ltd Nature

Source Zuo J M Kim et al Direct Observation of d-orbitalHoles and Cu-Cu Bonding in Cu2O Nature 401 no 6748(1999) 49-52 copy 1999

19

Screenshot of Scientific American article Observing Orbitals removed due to copyright restrictions read the article online

20

Whatrsquos this good for

Hydrogen a real world

example

Image in the public domain

21

The Hydrogen Future

Images in the public domain22

History of Hydrogen

copy ACS Publications From Grochala W and Peter P Edwards Chemical Reviews 104(2004) 1283-1315 All rights reserved This content is excluded from our CreativeCommons license For more information see httpocwmiteduhelpfaq-fair-use

23

How large of a gas tank do we want

The ldquoDrop Testrdquo

24

Figure 1 copy Toyota Motor Corporation Drop Test copy EDO Canada All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

The hydrogen atom electrostatics

+ Schroumldinger equation

Coulomb potential

stationary e-

wave functions possible energies

25

r

Coulomb potential

stationary

The hydrogen atom

stationary Schroumldinger equation Hl = El

T + V

= E

just solve

2 2 + V

(r) = E(r)

2m

2 2e2

(r) = E(r)

2m 40r

26

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 2: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

1 Itrsquos a Quantum WorldThe Theory of Quantum Mechanics

2 Quantum Mechanics Practice Makes Perfect

3 From Many-Body to Single-Particle Quantum Modeling of Molecules

Part II Topics

4 Application of Quantum Modeling of Molecules Solar Thermal Fuels

5 Application of Quantum Modeling of Molecules Hydrogen Storage

6 From Atoms to Solids

7 Quantum Modeling of Solids Basic Properties

8 Advanced Prop of MaterialsWhat else can we do

9 Application of Quantum Modeling of Solids Solar Cells Part I

10 Application of Quantum Modeling of Solids Solar Cells Part II

11 Application of Quantum Modeling of Solids Nanotechnology

2

Motivation electron in box

Image of NGC 604 nebula is in the public domain Source HubbleSpace Telescope Institute (NASA) Via Wikimedia Commons

Image adapted from Wikimedia Commons httpcommonswikimediaorg3

Lesson outline

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

4

ReviewWhy QM

Problems in classical physics that led to quantum mechanics

bull ldquoclassical atomrdquo

bull quantization of properties

bull wave aspect of matter

bull (black-body radiation)

5

Review Quantization photoelectric

Eeeffect

w A

E = n( - A) = h(v - vA)

h = 27n = 66 middot 10-34 Wattsec2

Einstein photon E = nw

__ _ _

__

_ _

____

_

Image by MIT OpenCourseWare

6

ldquoClassical atomsrdquo

+

e -

problem accelerated charge causes radiation atom not stable

hydrogen atom

7

From Wikipedia License CC-BY-SA This content is excluded from our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

ReviewWave aspect

wave character particle character

lightmatter

Image in public domain See Wikimedia Commons

__ _ _

__

_ _

____

_

Image by MIT OpenCourseWare

9

Double-Slit

Courtesy of Bernd Thaller Used with permission

10

ReviewWave aspect

p = nk = A |k|

particle and momentumE p v kwave frequency and wavevector

E = hv = n h k

de Broglie free particle can be described a as planewave with A =

h mv

1(r t) = Aei(kmiddotr-wt)

11

32408 542 PMhoscom2gif 512342 pixels

Page 1 of 1httphyperphysicsphy-astrgsueduhbasequantumimgquahoscom2gif

32408 542 PMhoscom2gif 512342 pixels

Page 1 of 1httphyperphysicsphy-astrgsueduhbasequantumimgquahoscom2gif

Review Interpretation of QM 1(r t) wave function (complex)

|1|2 = 11 interpretation as probability to find particle

11dV = 1

2 (r t) (r t)

Image by MIT OpenCourseWare

12

Wave Particles Hitting a Wall

Courtesy of Bernd Thaller Used with permission

13

Electron WaveParticle Video

Courtesy of cassiopeiaprojectcom

SourceYouTube (cassiopeiaproject) 14

Hamiltonian

Review Schroumldinger equation

second derivative in space a wave equation

first derivative in time

2

2m 2 + V (r t)

(r t) = i

t (r t)

12 - 2 + V (r t) = H =

2m 2 p = -i1p

= + V = T + V2m

15

Schroumldinger

From Wikipedia License CC-BY-SA This content is excluded from our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use16

Review Schroumldinger equation

H time independent 1(r t) = 1(r) middot f(t)

f(t) H1(rr)in = = const = E

f(t) 1(rr)

H (r) = E (r) - i Et (r t) = (r) middot e

time independent Schroumldinger equation stationary Schroumldinger equation

17

Particle in a box Schroumldinger equation

boundary conditions general solution

18

Itrsquos real

Cu-O Bond Ti-O Bond(experiment) (theory) Reprinted by permission from Macmillan Publishers Ltd Nature

Source Zuo J M Kim et al Direct Observation of d-orbitalHoles and Cu-Cu Bonding in Cu2O Nature 401 no 6748(1999) 49-52 copy 1999

19

Screenshot of Scientific American article Observing Orbitals removed due to copyright restrictions read the article online

20

Whatrsquos this good for

Hydrogen a real world

example

Image in the public domain

21

The Hydrogen Future

Images in the public domain22

History of Hydrogen

copy ACS Publications From Grochala W and Peter P Edwards Chemical Reviews 104(2004) 1283-1315 All rights reserved This content is excluded from our CreativeCommons license For more information see httpocwmiteduhelpfaq-fair-use

23

How large of a gas tank do we want

The ldquoDrop Testrdquo

24

Figure 1 copy Toyota Motor Corporation Drop Test copy EDO Canada All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

The hydrogen atom electrostatics

+ Schroumldinger equation

Coulomb potential

stationary e-

wave functions possible energies

25

r

Coulomb potential

stationary

The hydrogen atom

stationary Schroumldinger equation Hl = El

T + V

= E

just solve

2 2 + V

(r) = E(r)

2m

2 2e2

(r) = E(r)

2m 40r

26

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 3: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Motivation electron in box

Image of NGC 604 nebula is in the public domain Source HubbleSpace Telescope Institute (NASA) Via Wikimedia Commons

Image adapted from Wikimedia Commons httpcommonswikimediaorg3

Lesson outline

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

4

ReviewWhy QM

Problems in classical physics that led to quantum mechanics

bull ldquoclassical atomrdquo

bull quantization of properties

bull wave aspect of matter

bull (black-body radiation)

5

Review Quantization photoelectric

Eeeffect

w A

E = n( - A) = h(v - vA)

h = 27n = 66 middot 10-34 Wattsec2

Einstein photon E = nw

__ _ _

__

_ _

____

_

Image by MIT OpenCourseWare

6

ldquoClassical atomsrdquo

+

e -

problem accelerated charge causes radiation atom not stable

hydrogen atom

7

From Wikipedia License CC-BY-SA This content is excluded from our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

ReviewWave aspect

wave character particle character

lightmatter

Image in public domain See Wikimedia Commons

__ _ _

__

_ _

____

_

Image by MIT OpenCourseWare

9

Double-Slit

Courtesy of Bernd Thaller Used with permission

10

ReviewWave aspect

p = nk = A |k|

particle and momentumE p v kwave frequency and wavevector

E = hv = n h k

de Broglie free particle can be described a as planewave with A =

h mv

1(r t) = Aei(kmiddotr-wt)

11

32408 542 PMhoscom2gif 512342 pixels

Page 1 of 1httphyperphysicsphy-astrgsueduhbasequantumimgquahoscom2gif

32408 542 PMhoscom2gif 512342 pixels

Page 1 of 1httphyperphysicsphy-astrgsueduhbasequantumimgquahoscom2gif

Review Interpretation of QM 1(r t) wave function (complex)

|1|2 = 11 interpretation as probability to find particle

11dV = 1

2 (r t) (r t)

Image by MIT OpenCourseWare

12

Wave Particles Hitting a Wall

Courtesy of Bernd Thaller Used with permission

13

Electron WaveParticle Video

Courtesy of cassiopeiaprojectcom

SourceYouTube (cassiopeiaproject) 14

Hamiltonian

Review Schroumldinger equation

second derivative in space a wave equation

first derivative in time

2

2m 2 + V (r t)

(r t) = i

t (r t)

12 - 2 + V (r t) = H =

2m 2 p = -i1p

= + V = T + V2m

15

Schroumldinger

From Wikipedia License CC-BY-SA This content is excluded from our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use16

Review Schroumldinger equation

H time independent 1(r t) = 1(r) middot f(t)

f(t) H1(rr)in = = const = E

f(t) 1(rr)

H (r) = E (r) - i Et (r t) = (r) middot e

time independent Schroumldinger equation stationary Schroumldinger equation

17

Particle in a box Schroumldinger equation

boundary conditions general solution

18

Itrsquos real

Cu-O Bond Ti-O Bond(experiment) (theory) Reprinted by permission from Macmillan Publishers Ltd Nature

Source Zuo J M Kim et al Direct Observation of d-orbitalHoles and Cu-Cu Bonding in Cu2O Nature 401 no 6748(1999) 49-52 copy 1999

19

Screenshot of Scientific American article Observing Orbitals removed due to copyright restrictions read the article online

20

Whatrsquos this good for

Hydrogen a real world

example

Image in the public domain

21

The Hydrogen Future

Images in the public domain22

History of Hydrogen

copy ACS Publications From Grochala W and Peter P Edwards Chemical Reviews 104(2004) 1283-1315 All rights reserved This content is excluded from our CreativeCommons license For more information see httpocwmiteduhelpfaq-fair-use

23

How large of a gas tank do we want

The ldquoDrop Testrdquo

24

Figure 1 copy Toyota Motor Corporation Drop Test copy EDO Canada All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

The hydrogen atom electrostatics

+ Schroumldinger equation

Coulomb potential

stationary e-

wave functions possible energies

25

r

Coulomb potential

stationary

The hydrogen atom

stationary Schroumldinger equation Hl = El

T + V

= E

just solve

2 2 + V

(r) = E(r)

2m

2 2e2

(r) = E(r)

2m 40r

26

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 4: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Lesson outline

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

4

ReviewWhy QM

Problems in classical physics that led to quantum mechanics

bull ldquoclassical atomrdquo

bull quantization of properties

bull wave aspect of matter

bull (black-body radiation)

5

Review Quantization photoelectric

Eeeffect

w A

E = n( - A) = h(v - vA)

h = 27n = 66 middot 10-34 Wattsec2

Einstein photon E = nw

__ _ _

__

_ _

____

_

Image by MIT OpenCourseWare

6

ldquoClassical atomsrdquo

+

e -

problem accelerated charge causes radiation atom not stable

hydrogen atom

7

From Wikipedia License CC-BY-SA This content is excluded from our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

ReviewWave aspect

wave character particle character

lightmatter

Image in public domain See Wikimedia Commons

__ _ _

__

_ _

____

_

Image by MIT OpenCourseWare

9

Double-Slit

Courtesy of Bernd Thaller Used with permission

10

ReviewWave aspect

p = nk = A |k|

particle and momentumE p v kwave frequency and wavevector

E = hv = n h k

de Broglie free particle can be described a as planewave with A =

h mv

1(r t) = Aei(kmiddotr-wt)

11

32408 542 PMhoscom2gif 512342 pixels

Page 1 of 1httphyperphysicsphy-astrgsueduhbasequantumimgquahoscom2gif

32408 542 PMhoscom2gif 512342 pixels

Page 1 of 1httphyperphysicsphy-astrgsueduhbasequantumimgquahoscom2gif

Review Interpretation of QM 1(r t) wave function (complex)

|1|2 = 11 interpretation as probability to find particle

11dV = 1

2 (r t) (r t)

Image by MIT OpenCourseWare

12

Wave Particles Hitting a Wall

Courtesy of Bernd Thaller Used with permission

13

Electron WaveParticle Video

Courtesy of cassiopeiaprojectcom

SourceYouTube (cassiopeiaproject) 14

Hamiltonian

Review Schroumldinger equation

second derivative in space a wave equation

first derivative in time

2

2m 2 + V (r t)

(r t) = i

t (r t)

12 - 2 + V (r t) = H =

2m 2 p = -i1p

= + V = T + V2m

15

Schroumldinger

From Wikipedia License CC-BY-SA This content is excluded from our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use16

Review Schroumldinger equation

H time independent 1(r t) = 1(r) middot f(t)

f(t) H1(rr)in = = const = E

f(t) 1(rr)

H (r) = E (r) - i Et (r t) = (r) middot e

time independent Schroumldinger equation stationary Schroumldinger equation

17

Particle in a box Schroumldinger equation

boundary conditions general solution

18

Itrsquos real

Cu-O Bond Ti-O Bond(experiment) (theory) Reprinted by permission from Macmillan Publishers Ltd Nature

Source Zuo J M Kim et al Direct Observation of d-orbitalHoles and Cu-Cu Bonding in Cu2O Nature 401 no 6748(1999) 49-52 copy 1999

19

Screenshot of Scientific American article Observing Orbitals removed due to copyright restrictions read the article online

20

Whatrsquos this good for

Hydrogen a real world

example

Image in the public domain

21

The Hydrogen Future

Images in the public domain22

History of Hydrogen

copy ACS Publications From Grochala W and Peter P Edwards Chemical Reviews 104(2004) 1283-1315 All rights reserved This content is excluded from our CreativeCommons license For more information see httpocwmiteduhelpfaq-fair-use

23

How large of a gas tank do we want

The ldquoDrop Testrdquo

24

Figure 1 copy Toyota Motor Corporation Drop Test copy EDO Canada All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

The hydrogen atom electrostatics

+ Schroumldinger equation

Coulomb potential

stationary e-

wave functions possible energies

25

r

Coulomb potential

stationary

The hydrogen atom

stationary Schroumldinger equation Hl = El

T + V

= E

just solve

2 2 + V

(r) = E(r)

2m

2 2e2

(r) = E(r)

2m 40r

26

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 5: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

ReviewWhy QM

Problems in classical physics that led to quantum mechanics

bull ldquoclassical atomrdquo

bull quantization of properties

bull wave aspect of matter

bull (black-body radiation)

5

Review Quantization photoelectric

Eeeffect

w A

E = n( - A) = h(v - vA)

h = 27n = 66 middot 10-34 Wattsec2

Einstein photon E = nw

__ _ _

__

_ _

____

_

Image by MIT OpenCourseWare

6

ldquoClassical atomsrdquo

+

e -

problem accelerated charge causes radiation atom not stable

hydrogen atom

7

From Wikipedia License CC-BY-SA This content is excluded from our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

ReviewWave aspect

wave character particle character

lightmatter

Image in public domain See Wikimedia Commons

__ _ _

__

_ _

____

_

Image by MIT OpenCourseWare

9

Double-Slit

Courtesy of Bernd Thaller Used with permission

10

ReviewWave aspect

p = nk = A |k|

particle and momentumE p v kwave frequency and wavevector

E = hv = n h k

de Broglie free particle can be described a as planewave with A =

h mv

1(r t) = Aei(kmiddotr-wt)

11

32408 542 PMhoscom2gif 512342 pixels

Page 1 of 1httphyperphysicsphy-astrgsueduhbasequantumimgquahoscom2gif

32408 542 PMhoscom2gif 512342 pixels

Page 1 of 1httphyperphysicsphy-astrgsueduhbasequantumimgquahoscom2gif

Review Interpretation of QM 1(r t) wave function (complex)

|1|2 = 11 interpretation as probability to find particle

11dV = 1

2 (r t) (r t)

Image by MIT OpenCourseWare

12

Wave Particles Hitting a Wall

Courtesy of Bernd Thaller Used with permission

13

Electron WaveParticle Video

Courtesy of cassiopeiaprojectcom

SourceYouTube (cassiopeiaproject) 14

Hamiltonian

Review Schroumldinger equation

second derivative in space a wave equation

first derivative in time

2

2m 2 + V (r t)

(r t) = i

t (r t)

12 - 2 + V (r t) = H =

2m 2 p = -i1p

= + V = T + V2m

15

Schroumldinger

From Wikipedia License CC-BY-SA This content is excluded from our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use16

Review Schroumldinger equation

H time independent 1(r t) = 1(r) middot f(t)

f(t) H1(rr)in = = const = E

f(t) 1(rr)

H (r) = E (r) - i Et (r t) = (r) middot e

time independent Schroumldinger equation stationary Schroumldinger equation

17

Particle in a box Schroumldinger equation

boundary conditions general solution

18

Itrsquos real

Cu-O Bond Ti-O Bond(experiment) (theory) Reprinted by permission from Macmillan Publishers Ltd Nature

Source Zuo J M Kim et al Direct Observation of d-orbitalHoles and Cu-Cu Bonding in Cu2O Nature 401 no 6748(1999) 49-52 copy 1999

19

Screenshot of Scientific American article Observing Orbitals removed due to copyright restrictions read the article online

20

Whatrsquos this good for

Hydrogen a real world

example

Image in the public domain

21

The Hydrogen Future

Images in the public domain22

History of Hydrogen

copy ACS Publications From Grochala W and Peter P Edwards Chemical Reviews 104(2004) 1283-1315 All rights reserved This content is excluded from our CreativeCommons license For more information see httpocwmiteduhelpfaq-fair-use

23

How large of a gas tank do we want

The ldquoDrop Testrdquo

24

Figure 1 copy Toyota Motor Corporation Drop Test copy EDO Canada All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

The hydrogen atom electrostatics

+ Schroumldinger equation

Coulomb potential

stationary e-

wave functions possible energies

25

r

Coulomb potential

stationary

The hydrogen atom

stationary Schroumldinger equation Hl = El

T + V

= E

just solve

2 2 + V

(r) = E(r)

2m

2 2e2

(r) = E(r)

2m 40r

26

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 6: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Review Quantization photoelectric

Eeeffect

w A

E = n( - A) = h(v - vA)

h = 27n = 66 middot 10-34 Wattsec2

Einstein photon E = nw

__ _ _

__

_ _

____

_

Image by MIT OpenCourseWare

6

ldquoClassical atomsrdquo

+

e -

problem accelerated charge causes radiation atom not stable

hydrogen atom

7

From Wikipedia License CC-BY-SA This content is excluded from our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

ReviewWave aspect

wave character particle character

lightmatter

Image in public domain See Wikimedia Commons

__ _ _

__

_ _

____

_

Image by MIT OpenCourseWare

9

Double-Slit

Courtesy of Bernd Thaller Used with permission

10

ReviewWave aspect

p = nk = A |k|

particle and momentumE p v kwave frequency and wavevector

E = hv = n h k

de Broglie free particle can be described a as planewave with A =

h mv

1(r t) = Aei(kmiddotr-wt)

11

32408 542 PMhoscom2gif 512342 pixels

Page 1 of 1httphyperphysicsphy-astrgsueduhbasequantumimgquahoscom2gif

32408 542 PMhoscom2gif 512342 pixels

Page 1 of 1httphyperphysicsphy-astrgsueduhbasequantumimgquahoscom2gif

Review Interpretation of QM 1(r t) wave function (complex)

|1|2 = 11 interpretation as probability to find particle

11dV = 1

2 (r t) (r t)

Image by MIT OpenCourseWare

12

Wave Particles Hitting a Wall

Courtesy of Bernd Thaller Used with permission

13

Electron WaveParticle Video

Courtesy of cassiopeiaprojectcom

SourceYouTube (cassiopeiaproject) 14

Hamiltonian

Review Schroumldinger equation

second derivative in space a wave equation

first derivative in time

2

2m 2 + V (r t)

(r t) = i

t (r t)

12 - 2 + V (r t) = H =

2m 2 p = -i1p

= + V = T + V2m

15

Schroumldinger

From Wikipedia License CC-BY-SA This content is excluded from our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use16

Review Schroumldinger equation

H time independent 1(r t) = 1(r) middot f(t)

f(t) H1(rr)in = = const = E

f(t) 1(rr)

H (r) = E (r) - i Et (r t) = (r) middot e

time independent Schroumldinger equation stationary Schroumldinger equation

17

Particle in a box Schroumldinger equation

boundary conditions general solution

18

Itrsquos real

Cu-O Bond Ti-O Bond(experiment) (theory) Reprinted by permission from Macmillan Publishers Ltd Nature

Source Zuo J M Kim et al Direct Observation of d-orbitalHoles and Cu-Cu Bonding in Cu2O Nature 401 no 6748(1999) 49-52 copy 1999

19

Screenshot of Scientific American article Observing Orbitals removed due to copyright restrictions read the article online

20

Whatrsquos this good for

Hydrogen a real world

example

Image in the public domain

21

The Hydrogen Future

Images in the public domain22

History of Hydrogen

copy ACS Publications From Grochala W and Peter P Edwards Chemical Reviews 104(2004) 1283-1315 All rights reserved This content is excluded from our CreativeCommons license For more information see httpocwmiteduhelpfaq-fair-use

23

How large of a gas tank do we want

The ldquoDrop Testrdquo

24

Figure 1 copy Toyota Motor Corporation Drop Test copy EDO Canada All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

The hydrogen atom electrostatics

+ Schroumldinger equation

Coulomb potential

stationary e-

wave functions possible energies

25

r

Coulomb potential

stationary

The hydrogen atom

stationary Schroumldinger equation Hl = El

T + V

= E

just solve

2 2 + V

(r) = E(r)

2m

2 2e2

(r) = E(r)

2m 40r

26

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 7: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

ldquoClassical atomsrdquo

+

e -

problem accelerated charge causes radiation atom not stable

hydrogen atom

7

From Wikipedia License CC-BY-SA This content is excluded from our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

ReviewWave aspect

wave character particle character

lightmatter

Image in public domain See Wikimedia Commons

__ _ _

__

_ _

____

_

Image by MIT OpenCourseWare

9

Double-Slit

Courtesy of Bernd Thaller Used with permission

10

ReviewWave aspect

p = nk = A |k|

particle and momentumE p v kwave frequency and wavevector

E = hv = n h k

de Broglie free particle can be described a as planewave with A =

h mv

1(r t) = Aei(kmiddotr-wt)

11

32408 542 PMhoscom2gif 512342 pixels

Page 1 of 1httphyperphysicsphy-astrgsueduhbasequantumimgquahoscom2gif

32408 542 PMhoscom2gif 512342 pixels

Page 1 of 1httphyperphysicsphy-astrgsueduhbasequantumimgquahoscom2gif

Review Interpretation of QM 1(r t) wave function (complex)

|1|2 = 11 interpretation as probability to find particle

11dV = 1

2 (r t) (r t)

Image by MIT OpenCourseWare

12

Wave Particles Hitting a Wall

Courtesy of Bernd Thaller Used with permission

13

Electron WaveParticle Video

Courtesy of cassiopeiaprojectcom

SourceYouTube (cassiopeiaproject) 14

Hamiltonian

Review Schroumldinger equation

second derivative in space a wave equation

first derivative in time

2

2m 2 + V (r t)

(r t) = i

t (r t)

12 - 2 + V (r t) = H =

2m 2 p = -i1p

= + V = T + V2m

15

Schroumldinger

From Wikipedia License CC-BY-SA This content is excluded from our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use16

Review Schroumldinger equation

H time independent 1(r t) = 1(r) middot f(t)

f(t) H1(rr)in = = const = E

f(t) 1(rr)

H (r) = E (r) - i Et (r t) = (r) middot e

time independent Schroumldinger equation stationary Schroumldinger equation

17

Particle in a box Schroumldinger equation

boundary conditions general solution

18

Itrsquos real

Cu-O Bond Ti-O Bond(experiment) (theory) Reprinted by permission from Macmillan Publishers Ltd Nature

Source Zuo J M Kim et al Direct Observation of d-orbitalHoles and Cu-Cu Bonding in Cu2O Nature 401 no 6748(1999) 49-52 copy 1999

19

Screenshot of Scientific American article Observing Orbitals removed due to copyright restrictions read the article online

20

Whatrsquos this good for

Hydrogen a real world

example

Image in the public domain

21

The Hydrogen Future

Images in the public domain22

History of Hydrogen

copy ACS Publications From Grochala W and Peter P Edwards Chemical Reviews 104(2004) 1283-1315 All rights reserved This content is excluded from our CreativeCommons license For more information see httpocwmiteduhelpfaq-fair-use

23

How large of a gas tank do we want

The ldquoDrop Testrdquo

24

Figure 1 copy Toyota Motor Corporation Drop Test copy EDO Canada All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

The hydrogen atom electrostatics

+ Schroumldinger equation

Coulomb potential

stationary e-

wave functions possible energies

25

r

Coulomb potential

stationary

The hydrogen atom

stationary Schroumldinger equation Hl = El

T + V

= E

just solve

2 2 + V

(r) = E(r)

2m

2 2e2

(r) = E(r)

2m 40r

26

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 8: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

From Wikipedia License CC-BY-SA This content is excluded from our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

ReviewWave aspect

wave character particle character

lightmatter

Image in public domain See Wikimedia Commons

__ _ _

__

_ _

____

_

Image by MIT OpenCourseWare

9

Double-Slit

Courtesy of Bernd Thaller Used with permission

10

ReviewWave aspect

p = nk = A |k|

particle and momentumE p v kwave frequency and wavevector

E = hv = n h k

de Broglie free particle can be described a as planewave with A =

h mv

1(r t) = Aei(kmiddotr-wt)

11

32408 542 PMhoscom2gif 512342 pixels

Page 1 of 1httphyperphysicsphy-astrgsueduhbasequantumimgquahoscom2gif

32408 542 PMhoscom2gif 512342 pixels

Page 1 of 1httphyperphysicsphy-astrgsueduhbasequantumimgquahoscom2gif

Review Interpretation of QM 1(r t) wave function (complex)

|1|2 = 11 interpretation as probability to find particle

11dV = 1

2 (r t) (r t)

Image by MIT OpenCourseWare

12

Wave Particles Hitting a Wall

Courtesy of Bernd Thaller Used with permission

13

Electron WaveParticle Video

Courtesy of cassiopeiaprojectcom

SourceYouTube (cassiopeiaproject) 14

Hamiltonian

Review Schroumldinger equation

second derivative in space a wave equation

first derivative in time

2

2m 2 + V (r t)

(r t) = i

t (r t)

12 - 2 + V (r t) = H =

2m 2 p = -i1p

= + V = T + V2m

15

Schroumldinger

From Wikipedia License CC-BY-SA This content is excluded from our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use16

Review Schroumldinger equation

H time independent 1(r t) = 1(r) middot f(t)

f(t) H1(rr)in = = const = E

f(t) 1(rr)

H (r) = E (r) - i Et (r t) = (r) middot e

time independent Schroumldinger equation stationary Schroumldinger equation

17

Particle in a box Schroumldinger equation

boundary conditions general solution

18

Itrsquos real

Cu-O Bond Ti-O Bond(experiment) (theory) Reprinted by permission from Macmillan Publishers Ltd Nature

Source Zuo J M Kim et al Direct Observation of d-orbitalHoles and Cu-Cu Bonding in Cu2O Nature 401 no 6748(1999) 49-52 copy 1999

19

Screenshot of Scientific American article Observing Orbitals removed due to copyright restrictions read the article online

20

Whatrsquos this good for

Hydrogen a real world

example

Image in the public domain

21

The Hydrogen Future

Images in the public domain22

History of Hydrogen

copy ACS Publications From Grochala W and Peter P Edwards Chemical Reviews 104(2004) 1283-1315 All rights reserved This content is excluded from our CreativeCommons license For more information see httpocwmiteduhelpfaq-fair-use

23

How large of a gas tank do we want

The ldquoDrop Testrdquo

24

Figure 1 copy Toyota Motor Corporation Drop Test copy EDO Canada All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

The hydrogen atom electrostatics

+ Schroumldinger equation

Coulomb potential

stationary e-

wave functions possible energies

25

r

Coulomb potential

stationary

The hydrogen atom

stationary Schroumldinger equation Hl = El

T + V

= E

just solve

2 2 + V

(r) = E(r)

2m

2 2e2

(r) = E(r)

2m 40r

26

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 9: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

ReviewWave aspect

wave character particle character

lightmatter

Image in public domain See Wikimedia Commons

__ _ _

__

_ _

____

_

Image by MIT OpenCourseWare

9

Double-Slit

Courtesy of Bernd Thaller Used with permission

10

ReviewWave aspect

p = nk = A |k|

particle and momentumE p v kwave frequency and wavevector

E = hv = n h k

de Broglie free particle can be described a as planewave with A =

h mv

1(r t) = Aei(kmiddotr-wt)

11

32408 542 PMhoscom2gif 512342 pixels

Page 1 of 1httphyperphysicsphy-astrgsueduhbasequantumimgquahoscom2gif

32408 542 PMhoscom2gif 512342 pixels

Page 1 of 1httphyperphysicsphy-astrgsueduhbasequantumimgquahoscom2gif

Review Interpretation of QM 1(r t) wave function (complex)

|1|2 = 11 interpretation as probability to find particle

11dV = 1

2 (r t) (r t)

Image by MIT OpenCourseWare

12

Wave Particles Hitting a Wall

Courtesy of Bernd Thaller Used with permission

13

Electron WaveParticle Video

Courtesy of cassiopeiaprojectcom

SourceYouTube (cassiopeiaproject) 14

Hamiltonian

Review Schroumldinger equation

second derivative in space a wave equation

first derivative in time

2

2m 2 + V (r t)

(r t) = i

t (r t)

12 - 2 + V (r t) = H =

2m 2 p = -i1p

= + V = T + V2m

15

Schroumldinger

From Wikipedia License CC-BY-SA This content is excluded from our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use16

Review Schroumldinger equation

H time independent 1(r t) = 1(r) middot f(t)

f(t) H1(rr)in = = const = E

f(t) 1(rr)

H (r) = E (r) - i Et (r t) = (r) middot e

time independent Schroumldinger equation stationary Schroumldinger equation

17

Particle in a box Schroumldinger equation

boundary conditions general solution

18

Itrsquos real

Cu-O Bond Ti-O Bond(experiment) (theory) Reprinted by permission from Macmillan Publishers Ltd Nature

Source Zuo J M Kim et al Direct Observation of d-orbitalHoles and Cu-Cu Bonding in Cu2O Nature 401 no 6748(1999) 49-52 copy 1999

19

Screenshot of Scientific American article Observing Orbitals removed due to copyright restrictions read the article online

20

Whatrsquos this good for

Hydrogen a real world

example

Image in the public domain

21

The Hydrogen Future

Images in the public domain22

History of Hydrogen

copy ACS Publications From Grochala W and Peter P Edwards Chemical Reviews 104(2004) 1283-1315 All rights reserved This content is excluded from our CreativeCommons license For more information see httpocwmiteduhelpfaq-fair-use

23

How large of a gas tank do we want

The ldquoDrop Testrdquo

24

Figure 1 copy Toyota Motor Corporation Drop Test copy EDO Canada All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

The hydrogen atom electrostatics

+ Schroumldinger equation

Coulomb potential

stationary e-

wave functions possible energies

25

r

Coulomb potential

stationary

The hydrogen atom

stationary Schroumldinger equation Hl = El

T + V

= E

just solve

2 2 + V

(r) = E(r)

2m

2 2e2

(r) = E(r)

2m 40r

26

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 10: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Double-Slit

Courtesy of Bernd Thaller Used with permission

10

ReviewWave aspect

p = nk = A |k|

particle and momentumE p v kwave frequency and wavevector

E = hv = n h k

de Broglie free particle can be described a as planewave with A =

h mv

1(r t) = Aei(kmiddotr-wt)

11

32408 542 PMhoscom2gif 512342 pixels

Page 1 of 1httphyperphysicsphy-astrgsueduhbasequantumimgquahoscom2gif

32408 542 PMhoscom2gif 512342 pixels

Page 1 of 1httphyperphysicsphy-astrgsueduhbasequantumimgquahoscom2gif

Review Interpretation of QM 1(r t) wave function (complex)

|1|2 = 11 interpretation as probability to find particle

11dV = 1

2 (r t) (r t)

Image by MIT OpenCourseWare

12

Wave Particles Hitting a Wall

Courtesy of Bernd Thaller Used with permission

13

Electron WaveParticle Video

Courtesy of cassiopeiaprojectcom

SourceYouTube (cassiopeiaproject) 14

Hamiltonian

Review Schroumldinger equation

second derivative in space a wave equation

first derivative in time

2

2m 2 + V (r t)

(r t) = i

t (r t)

12 - 2 + V (r t) = H =

2m 2 p = -i1p

= + V = T + V2m

15

Schroumldinger

From Wikipedia License CC-BY-SA This content is excluded from our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use16

Review Schroumldinger equation

H time independent 1(r t) = 1(r) middot f(t)

f(t) H1(rr)in = = const = E

f(t) 1(rr)

H (r) = E (r) - i Et (r t) = (r) middot e

time independent Schroumldinger equation stationary Schroumldinger equation

17

Particle in a box Schroumldinger equation

boundary conditions general solution

18

Itrsquos real

Cu-O Bond Ti-O Bond(experiment) (theory) Reprinted by permission from Macmillan Publishers Ltd Nature

Source Zuo J M Kim et al Direct Observation of d-orbitalHoles and Cu-Cu Bonding in Cu2O Nature 401 no 6748(1999) 49-52 copy 1999

19

Screenshot of Scientific American article Observing Orbitals removed due to copyright restrictions read the article online

20

Whatrsquos this good for

Hydrogen a real world

example

Image in the public domain

21

The Hydrogen Future

Images in the public domain22

History of Hydrogen

copy ACS Publications From Grochala W and Peter P Edwards Chemical Reviews 104(2004) 1283-1315 All rights reserved This content is excluded from our CreativeCommons license For more information see httpocwmiteduhelpfaq-fair-use

23

How large of a gas tank do we want

The ldquoDrop Testrdquo

24

Figure 1 copy Toyota Motor Corporation Drop Test copy EDO Canada All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

The hydrogen atom electrostatics

+ Schroumldinger equation

Coulomb potential

stationary e-

wave functions possible energies

25

r

Coulomb potential

stationary

The hydrogen atom

stationary Schroumldinger equation Hl = El

T + V

= E

just solve

2 2 + V

(r) = E(r)

2m

2 2e2

(r) = E(r)

2m 40r

26

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 11: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

ReviewWave aspect

p = nk = A |k|

particle and momentumE p v kwave frequency and wavevector

E = hv = n h k

de Broglie free particle can be described a as planewave with A =

h mv

1(r t) = Aei(kmiddotr-wt)

11

32408 542 PMhoscom2gif 512342 pixels

Page 1 of 1httphyperphysicsphy-astrgsueduhbasequantumimgquahoscom2gif

32408 542 PMhoscom2gif 512342 pixels

Page 1 of 1httphyperphysicsphy-astrgsueduhbasequantumimgquahoscom2gif

Review Interpretation of QM 1(r t) wave function (complex)

|1|2 = 11 interpretation as probability to find particle

11dV = 1

2 (r t) (r t)

Image by MIT OpenCourseWare

12

Wave Particles Hitting a Wall

Courtesy of Bernd Thaller Used with permission

13

Electron WaveParticle Video

Courtesy of cassiopeiaprojectcom

SourceYouTube (cassiopeiaproject) 14

Hamiltonian

Review Schroumldinger equation

second derivative in space a wave equation

first derivative in time

2

2m 2 + V (r t)

(r t) = i

t (r t)

12 - 2 + V (r t) = H =

2m 2 p = -i1p

= + V = T + V2m

15

Schroumldinger

From Wikipedia License CC-BY-SA This content is excluded from our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use16

Review Schroumldinger equation

H time independent 1(r t) = 1(r) middot f(t)

f(t) H1(rr)in = = const = E

f(t) 1(rr)

H (r) = E (r) - i Et (r t) = (r) middot e

time independent Schroumldinger equation stationary Schroumldinger equation

17

Particle in a box Schroumldinger equation

boundary conditions general solution

18

Itrsquos real

Cu-O Bond Ti-O Bond(experiment) (theory) Reprinted by permission from Macmillan Publishers Ltd Nature

Source Zuo J M Kim et al Direct Observation of d-orbitalHoles and Cu-Cu Bonding in Cu2O Nature 401 no 6748(1999) 49-52 copy 1999

19

Screenshot of Scientific American article Observing Orbitals removed due to copyright restrictions read the article online

20

Whatrsquos this good for

Hydrogen a real world

example

Image in the public domain

21

The Hydrogen Future

Images in the public domain22

History of Hydrogen

copy ACS Publications From Grochala W and Peter P Edwards Chemical Reviews 104(2004) 1283-1315 All rights reserved This content is excluded from our CreativeCommons license For more information see httpocwmiteduhelpfaq-fair-use

23

How large of a gas tank do we want

The ldquoDrop Testrdquo

24

Figure 1 copy Toyota Motor Corporation Drop Test copy EDO Canada All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

The hydrogen atom electrostatics

+ Schroumldinger equation

Coulomb potential

stationary e-

wave functions possible energies

25

r

Coulomb potential

stationary

The hydrogen atom

stationary Schroumldinger equation Hl = El

T + V

= E

just solve

2 2 + V

(r) = E(r)

2m

2 2e2

(r) = E(r)

2m 40r

26

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 12: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

32408 542 PMhoscom2gif 512342 pixels

Page 1 of 1httphyperphysicsphy-astrgsueduhbasequantumimgquahoscom2gif

32408 542 PMhoscom2gif 512342 pixels

Page 1 of 1httphyperphysicsphy-astrgsueduhbasequantumimgquahoscom2gif

Review Interpretation of QM 1(r t) wave function (complex)

|1|2 = 11 interpretation as probability to find particle

11dV = 1

2 (r t) (r t)

Image by MIT OpenCourseWare

12

Wave Particles Hitting a Wall

Courtesy of Bernd Thaller Used with permission

13

Electron WaveParticle Video

Courtesy of cassiopeiaprojectcom

SourceYouTube (cassiopeiaproject) 14

Hamiltonian

Review Schroumldinger equation

second derivative in space a wave equation

first derivative in time

2

2m 2 + V (r t)

(r t) = i

t (r t)

12 - 2 + V (r t) = H =

2m 2 p = -i1p

= + V = T + V2m

15

Schroumldinger

From Wikipedia License CC-BY-SA This content is excluded from our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use16

Review Schroumldinger equation

H time independent 1(r t) = 1(r) middot f(t)

f(t) H1(rr)in = = const = E

f(t) 1(rr)

H (r) = E (r) - i Et (r t) = (r) middot e

time independent Schroumldinger equation stationary Schroumldinger equation

17

Particle in a box Schroumldinger equation

boundary conditions general solution

18

Itrsquos real

Cu-O Bond Ti-O Bond(experiment) (theory) Reprinted by permission from Macmillan Publishers Ltd Nature

Source Zuo J M Kim et al Direct Observation of d-orbitalHoles and Cu-Cu Bonding in Cu2O Nature 401 no 6748(1999) 49-52 copy 1999

19

Screenshot of Scientific American article Observing Orbitals removed due to copyright restrictions read the article online

20

Whatrsquos this good for

Hydrogen a real world

example

Image in the public domain

21

The Hydrogen Future

Images in the public domain22

History of Hydrogen

copy ACS Publications From Grochala W and Peter P Edwards Chemical Reviews 104(2004) 1283-1315 All rights reserved This content is excluded from our CreativeCommons license For more information see httpocwmiteduhelpfaq-fair-use

23

How large of a gas tank do we want

The ldquoDrop Testrdquo

24

Figure 1 copy Toyota Motor Corporation Drop Test copy EDO Canada All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

The hydrogen atom electrostatics

+ Schroumldinger equation

Coulomb potential

stationary e-

wave functions possible energies

25

r

Coulomb potential

stationary

The hydrogen atom

stationary Schroumldinger equation Hl = El

T + V

= E

just solve

2 2 + V

(r) = E(r)

2m

2 2e2

(r) = E(r)

2m 40r

26

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 13: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Wave Particles Hitting a Wall

Courtesy of Bernd Thaller Used with permission

13

Electron WaveParticle Video

Courtesy of cassiopeiaprojectcom

SourceYouTube (cassiopeiaproject) 14

Hamiltonian

Review Schroumldinger equation

second derivative in space a wave equation

first derivative in time

2

2m 2 + V (r t)

(r t) = i

t (r t)

12 - 2 + V (r t) = H =

2m 2 p = -i1p

= + V = T + V2m

15

Schroumldinger

From Wikipedia License CC-BY-SA This content is excluded from our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use16

Review Schroumldinger equation

H time independent 1(r t) = 1(r) middot f(t)

f(t) H1(rr)in = = const = E

f(t) 1(rr)

H (r) = E (r) - i Et (r t) = (r) middot e

time independent Schroumldinger equation stationary Schroumldinger equation

17

Particle in a box Schroumldinger equation

boundary conditions general solution

18

Itrsquos real

Cu-O Bond Ti-O Bond(experiment) (theory) Reprinted by permission from Macmillan Publishers Ltd Nature

Source Zuo J M Kim et al Direct Observation of d-orbitalHoles and Cu-Cu Bonding in Cu2O Nature 401 no 6748(1999) 49-52 copy 1999

19

Screenshot of Scientific American article Observing Orbitals removed due to copyright restrictions read the article online

20

Whatrsquos this good for

Hydrogen a real world

example

Image in the public domain

21

The Hydrogen Future

Images in the public domain22

History of Hydrogen

copy ACS Publications From Grochala W and Peter P Edwards Chemical Reviews 104(2004) 1283-1315 All rights reserved This content is excluded from our CreativeCommons license For more information see httpocwmiteduhelpfaq-fair-use

23

How large of a gas tank do we want

The ldquoDrop Testrdquo

24

Figure 1 copy Toyota Motor Corporation Drop Test copy EDO Canada All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

The hydrogen atom electrostatics

+ Schroumldinger equation

Coulomb potential

stationary e-

wave functions possible energies

25

r

Coulomb potential

stationary

The hydrogen atom

stationary Schroumldinger equation Hl = El

T + V

= E

just solve

2 2 + V

(r) = E(r)

2m

2 2e2

(r) = E(r)

2m 40r

26

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 14: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Electron WaveParticle Video

Courtesy of cassiopeiaprojectcom

SourceYouTube (cassiopeiaproject) 14

Hamiltonian

Review Schroumldinger equation

second derivative in space a wave equation

first derivative in time

2

2m 2 + V (r t)

(r t) = i

t (r t)

12 - 2 + V (r t) = H =

2m 2 p = -i1p

= + V = T + V2m

15

Schroumldinger

From Wikipedia License CC-BY-SA This content is excluded from our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use16

Review Schroumldinger equation

H time independent 1(r t) = 1(r) middot f(t)

f(t) H1(rr)in = = const = E

f(t) 1(rr)

H (r) = E (r) - i Et (r t) = (r) middot e

time independent Schroumldinger equation stationary Schroumldinger equation

17

Particle in a box Schroumldinger equation

boundary conditions general solution

18

Itrsquos real

Cu-O Bond Ti-O Bond(experiment) (theory) Reprinted by permission from Macmillan Publishers Ltd Nature

Source Zuo J M Kim et al Direct Observation of d-orbitalHoles and Cu-Cu Bonding in Cu2O Nature 401 no 6748(1999) 49-52 copy 1999

19

Screenshot of Scientific American article Observing Orbitals removed due to copyright restrictions read the article online

20

Whatrsquos this good for

Hydrogen a real world

example

Image in the public domain

21

The Hydrogen Future

Images in the public domain22

History of Hydrogen

copy ACS Publications From Grochala W and Peter P Edwards Chemical Reviews 104(2004) 1283-1315 All rights reserved This content is excluded from our CreativeCommons license For more information see httpocwmiteduhelpfaq-fair-use

23

How large of a gas tank do we want

The ldquoDrop Testrdquo

24

Figure 1 copy Toyota Motor Corporation Drop Test copy EDO Canada All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

The hydrogen atom electrostatics

+ Schroumldinger equation

Coulomb potential

stationary e-

wave functions possible energies

25

r

Coulomb potential

stationary

The hydrogen atom

stationary Schroumldinger equation Hl = El

T + V

= E

just solve

2 2 + V

(r) = E(r)

2m

2 2e2

(r) = E(r)

2m 40r

26

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 15: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Hamiltonian

Review Schroumldinger equation

second derivative in space a wave equation

first derivative in time

2

2m 2 + V (r t)

(r t) = i

t (r t)

12 - 2 + V (r t) = H =

2m 2 p = -i1p

= + V = T + V2m

15

Schroumldinger

From Wikipedia License CC-BY-SA This content is excluded from our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use16

Review Schroumldinger equation

H time independent 1(r t) = 1(r) middot f(t)

f(t) H1(rr)in = = const = E

f(t) 1(rr)

H (r) = E (r) - i Et (r t) = (r) middot e

time independent Schroumldinger equation stationary Schroumldinger equation

17

Particle in a box Schroumldinger equation

boundary conditions general solution

18

Itrsquos real

Cu-O Bond Ti-O Bond(experiment) (theory) Reprinted by permission from Macmillan Publishers Ltd Nature

Source Zuo J M Kim et al Direct Observation of d-orbitalHoles and Cu-Cu Bonding in Cu2O Nature 401 no 6748(1999) 49-52 copy 1999

19

Screenshot of Scientific American article Observing Orbitals removed due to copyright restrictions read the article online

20

Whatrsquos this good for

Hydrogen a real world

example

Image in the public domain

21

The Hydrogen Future

Images in the public domain22

History of Hydrogen

copy ACS Publications From Grochala W and Peter P Edwards Chemical Reviews 104(2004) 1283-1315 All rights reserved This content is excluded from our CreativeCommons license For more information see httpocwmiteduhelpfaq-fair-use

23

How large of a gas tank do we want

The ldquoDrop Testrdquo

24

Figure 1 copy Toyota Motor Corporation Drop Test copy EDO Canada All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

The hydrogen atom electrostatics

+ Schroumldinger equation

Coulomb potential

stationary e-

wave functions possible energies

25

r

Coulomb potential

stationary

The hydrogen atom

stationary Schroumldinger equation Hl = El

T + V

= E

just solve

2 2 + V

(r) = E(r)

2m

2 2e2

(r) = E(r)

2m 40r

26

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 16: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Schroumldinger

From Wikipedia License CC-BY-SA This content is excluded from our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use16

Review Schroumldinger equation

H time independent 1(r t) = 1(r) middot f(t)

f(t) H1(rr)in = = const = E

f(t) 1(rr)

H (r) = E (r) - i Et (r t) = (r) middot e

time independent Schroumldinger equation stationary Schroumldinger equation

17

Particle in a box Schroumldinger equation

boundary conditions general solution

18

Itrsquos real

Cu-O Bond Ti-O Bond(experiment) (theory) Reprinted by permission from Macmillan Publishers Ltd Nature

Source Zuo J M Kim et al Direct Observation of d-orbitalHoles and Cu-Cu Bonding in Cu2O Nature 401 no 6748(1999) 49-52 copy 1999

19

Screenshot of Scientific American article Observing Orbitals removed due to copyright restrictions read the article online

20

Whatrsquos this good for

Hydrogen a real world

example

Image in the public domain

21

The Hydrogen Future

Images in the public domain22

History of Hydrogen

copy ACS Publications From Grochala W and Peter P Edwards Chemical Reviews 104(2004) 1283-1315 All rights reserved This content is excluded from our CreativeCommons license For more information see httpocwmiteduhelpfaq-fair-use

23

How large of a gas tank do we want

The ldquoDrop Testrdquo

24

Figure 1 copy Toyota Motor Corporation Drop Test copy EDO Canada All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

The hydrogen atom electrostatics

+ Schroumldinger equation

Coulomb potential

stationary e-

wave functions possible energies

25

r

Coulomb potential

stationary

The hydrogen atom

stationary Schroumldinger equation Hl = El

T + V

= E

just solve

2 2 + V

(r) = E(r)

2m

2 2e2

(r) = E(r)

2m 40r

26

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 17: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Review Schroumldinger equation

H time independent 1(r t) = 1(r) middot f(t)

f(t) H1(rr)in = = const = E

f(t) 1(rr)

H (r) = E (r) - i Et (r t) = (r) middot e

time independent Schroumldinger equation stationary Schroumldinger equation

17

Particle in a box Schroumldinger equation

boundary conditions general solution

18

Itrsquos real

Cu-O Bond Ti-O Bond(experiment) (theory) Reprinted by permission from Macmillan Publishers Ltd Nature

Source Zuo J M Kim et al Direct Observation of d-orbitalHoles and Cu-Cu Bonding in Cu2O Nature 401 no 6748(1999) 49-52 copy 1999

19

Screenshot of Scientific American article Observing Orbitals removed due to copyright restrictions read the article online

20

Whatrsquos this good for

Hydrogen a real world

example

Image in the public domain

21

The Hydrogen Future

Images in the public domain22

History of Hydrogen

copy ACS Publications From Grochala W and Peter P Edwards Chemical Reviews 104(2004) 1283-1315 All rights reserved This content is excluded from our CreativeCommons license For more information see httpocwmiteduhelpfaq-fair-use

23

How large of a gas tank do we want

The ldquoDrop Testrdquo

24

Figure 1 copy Toyota Motor Corporation Drop Test copy EDO Canada All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

The hydrogen atom electrostatics

+ Schroumldinger equation

Coulomb potential

stationary e-

wave functions possible energies

25

r

Coulomb potential

stationary

The hydrogen atom

stationary Schroumldinger equation Hl = El

T + V

= E

just solve

2 2 + V

(r) = E(r)

2m

2 2e2

(r) = E(r)

2m 40r

26

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 18: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Particle in a box Schroumldinger equation

boundary conditions general solution

18

Itrsquos real

Cu-O Bond Ti-O Bond(experiment) (theory) Reprinted by permission from Macmillan Publishers Ltd Nature

Source Zuo J M Kim et al Direct Observation of d-orbitalHoles and Cu-Cu Bonding in Cu2O Nature 401 no 6748(1999) 49-52 copy 1999

19

Screenshot of Scientific American article Observing Orbitals removed due to copyright restrictions read the article online

20

Whatrsquos this good for

Hydrogen a real world

example

Image in the public domain

21

The Hydrogen Future

Images in the public domain22

History of Hydrogen

copy ACS Publications From Grochala W and Peter P Edwards Chemical Reviews 104(2004) 1283-1315 All rights reserved This content is excluded from our CreativeCommons license For more information see httpocwmiteduhelpfaq-fair-use

23

How large of a gas tank do we want

The ldquoDrop Testrdquo

24

Figure 1 copy Toyota Motor Corporation Drop Test copy EDO Canada All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

The hydrogen atom electrostatics

+ Schroumldinger equation

Coulomb potential

stationary e-

wave functions possible energies

25

r

Coulomb potential

stationary

The hydrogen atom

stationary Schroumldinger equation Hl = El

T + V

= E

just solve

2 2 + V

(r) = E(r)

2m

2 2e2

(r) = E(r)

2m 40r

26

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 19: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Itrsquos real

Cu-O Bond Ti-O Bond(experiment) (theory) Reprinted by permission from Macmillan Publishers Ltd Nature

Source Zuo J M Kim et al Direct Observation of d-orbitalHoles and Cu-Cu Bonding in Cu2O Nature 401 no 6748(1999) 49-52 copy 1999

19

Screenshot of Scientific American article Observing Orbitals removed due to copyright restrictions read the article online

20

Whatrsquos this good for

Hydrogen a real world

example

Image in the public domain

21

The Hydrogen Future

Images in the public domain22

History of Hydrogen

copy ACS Publications From Grochala W and Peter P Edwards Chemical Reviews 104(2004) 1283-1315 All rights reserved This content is excluded from our CreativeCommons license For more information see httpocwmiteduhelpfaq-fair-use

23

How large of a gas tank do we want

The ldquoDrop Testrdquo

24

Figure 1 copy Toyota Motor Corporation Drop Test copy EDO Canada All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

The hydrogen atom electrostatics

+ Schroumldinger equation

Coulomb potential

stationary e-

wave functions possible energies

25

r

Coulomb potential

stationary

The hydrogen atom

stationary Schroumldinger equation Hl = El

T + V

= E

just solve

2 2 + V

(r) = E(r)

2m

2 2e2

(r) = E(r)

2m 40r

26

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 20: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Screenshot of Scientific American article Observing Orbitals removed due to copyright restrictions read the article online

20

Whatrsquos this good for

Hydrogen a real world

example

Image in the public domain

21

The Hydrogen Future

Images in the public domain22

History of Hydrogen

copy ACS Publications From Grochala W and Peter P Edwards Chemical Reviews 104(2004) 1283-1315 All rights reserved This content is excluded from our CreativeCommons license For more information see httpocwmiteduhelpfaq-fair-use

23

How large of a gas tank do we want

The ldquoDrop Testrdquo

24

Figure 1 copy Toyota Motor Corporation Drop Test copy EDO Canada All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

The hydrogen atom electrostatics

+ Schroumldinger equation

Coulomb potential

stationary e-

wave functions possible energies

25

r

Coulomb potential

stationary

The hydrogen atom

stationary Schroumldinger equation Hl = El

T + V

= E

just solve

2 2 + V

(r) = E(r)

2m

2 2e2

(r) = E(r)

2m 40r

26

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 21: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Whatrsquos this good for

Hydrogen a real world

example

Image in the public domain

21

The Hydrogen Future

Images in the public domain22

History of Hydrogen

copy ACS Publications From Grochala W and Peter P Edwards Chemical Reviews 104(2004) 1283-1315 All rights reserved This content is excluded from our CreativeCommons license For more information see httpocwmiteduhelpfaq-fair-use

23

How large of a gas tank do we want

The ldquoDrop Testrdquo

24

Figure 1 copy Toyota Motor Corporation Drop Test copy EDO Canada All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

The hydrogen atom electrostatics

+ Schroumldinger equation

Coulomb potential

stationary e-

wave functions possible energies

25

r

Coulomb potential

stationary

The hydrogen atom

stationary Schroumldinger equation Hl = El

T + V

= E

just solve

2 2 + V

(r) = E(r)

2m

2 2e2

(r) = E(r)

2m 40r

26

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 22: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

The Hydrogen Future

Images in the public domain22

History of Hydrogen

copy ACS Publications From Grochala W and Peter P Edwards Chemical Reviews 104(2004) 1283-1315 All rights reserved This content is excluded from our CreativeCommons license For more information see httpocwmiteduhelpfaq-fair-use

23

How large of a gas tank do we want

The ldquoDrop Testrdquo

24

Figure 1 copy Toyota Motor Corporation Drop Test copy EDO Canada All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

The hydrogen atom electrostatics

+ Schroumldinger equation

Coulomb potential

stationary e-

wave functions possible energies

25

r

Coulomb potential

stationary

The hydrogen atom

stationary Schroumldinger equation Hl = El

T + V

= E

just solve

2 2 + V

(r) = E(r)

2m

2 2e2

(r) = E(r)

2m 40r

26

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 23: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

History of Hydrogen

copy ACS Publications From Grochala W and Peter P Edwards Chemical Reviews 104(2004) 1283-1315 All rights reserved This content is excluded from our CreativeCommons license For more information see httpocwmiteduhelpfaq-fair-use

23

How large of a gas tank do we want

The ldquoDrop Testrdquo

24

Figure 1 copy Toyota Motor Corporation Drop Test copy EDO Canada All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

The hydrogen atom electrostatics

+ Schroumldinger equation

Coulomb potential

stationary e-

wave functions possible energies

25

r

Coulomb potential

stationary

The hydrogen atom

stationary Schroumldinger equation Hl = El

T + V

= E

just solve

2 2 + V

(r) = E(r)

2m

2 2e2

(r) = E(r)

2m 40r

26

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 24: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

How large of a gas tank do we want

The ldquoDrop Testrdquo

24

Figure 1 copy Toyota Motor Corporation Drop Test copy EDO Canada All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

The hydrogen atom electrostatics

+ Schroumldinger equation

Coulomb potential

stationary e-

wave functions possible energies

25

r

Coulomb potential

stationary

The hydrogen atom

stationary Schroumldinger equation Hl = El

T + V

= E

just solve

2 2 + V

(r) = E(r)

2m

2 2e2

(r) = E(r)

2m 40r

26

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 25: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

The hydrogen atom electrostatics

+ Schroumldinger equation

Coulomb potential

stationary e-

wave functions possible energies

25

r

Coulomb potential

stationary

The hydrogen atom

stationary Schroumldinger equation Hl = El

T + V

= E

just solve

2 2 + V

(r) = E(r)

2m

2 2e2

(r) = E(r)

2m 40r

26

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 26: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

The hydrogen atom

stationary Schroumldinger equation Hl = El

T + V

= E

just solve

2 2 + V

(r) = E(r)

2m

2 2e2

(r) = E(r)

2m 40r

26

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 27: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

The hydrogen atom

choose a more suitable coordinate system

spherical coordinates

(r) = (x y z)

= (r )

license For more information see httpocwmiteduhelpfaq-fair-usecopy R Nave All rights reserved This content is excluded from our Creative Commons

27

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 28: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

The hydrogen atom Schroumldinger equation in spherical coordinates

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

28

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 29: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

The hydrogen atom

solve by separation of variables

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

29

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 30: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

The hydrogen atom

separation of variables

30

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 31: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

The hydrogen atom n = 1 2 3

R(r) Solution exists

Solution exists if and only if

if and only if Main quantum number

l = 0 1 2 3 n-1P(Ψ) Orbital quantum number

ml = -l -l+1 +l Magnetic quantum number

F() Solution exists if and only if

Image by MIT OpenCourseWare

31

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 32: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

32

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 33: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

The hydrogen atom

standard notation for states

Sharp s l = 0 For example if n = 2 l = 1 the state is designated 2p

Principal p l = 1

Diffuse d l = 2

Fundamental f l = 3

Image by MIT OpenCourseWare

33

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 34: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

The hydrogen atom

12π

12π

12

12

12π

12π

eplusmniφ

62

cos θ

32

sin θ

2a

e032

-ra0

12 2a

2- ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

12 6a

ra

e032

0

-r 2a0

1

2

2

2

0

0

1

1

0

0

0

1

n l ml F(φ) P(θ) R(r)

plusmn

quantum numbers

Image by MIT OpenCourseWare

34

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 35: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

The hydrogen atom httpwwworbitalscomorborbtablehtm

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm

35

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 36: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Courtesy of David Manthey Used with permission Source httpwwworbitalscomorborbtablehtm36

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 37: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

The hydrogen atom Energies

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

37

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 38: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

The hydrogen atom

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

38

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 39: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

The hydrogen atom

copy R Nave All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

39

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 40: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Atomic units 1 eV = 16021765-19 J

1 Rydberg = 13605692 eV = 21798719-18 J

1 Hartree = 2 Rydberg

1 Bohr =52917721-11 m

Energies in RyAtomic units (au)

Distances in Bohr

Also in use 1Aring=10-10m nm= 10-9m 40

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 41: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Slightly Increased Complexity

H (r) = E (r)

Analytic solutions become extremely complicated even

for simple systems

41

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 42: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Next Helium

+

e -

r1 H1 = E1

e- H1 + H2 + W

(r1 r2) = E(r1 r2)

T1 + V1 + T2 + V2 + W

(r1 r2) = E(r1 r2)

2 2 2 2e e 2 2 +

e2

40r12

(r1 r2) = E(r1 r2)1 22m 40r1 2m 40r2

cannot be solved analytically

r2

r12

42

problem

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 43: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Solution in general

Only a few problems are solvable analytically

We need approximate approaches

matrix eigenvalue perturbation theory

equation

43

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 44: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Solution in general Perturbation theory

small H = H0 + H1

wave functions and energies are known

wave functions and energies will be similar to those of Ho

44

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 45: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Solution in general =

ciciMatrix eigenvalue equation

i expansion inH1 = E1

orthonormalized basis functions

H

cici = E

cici i i

dr cH

cici = E dr c

cicij j i i

Hjici = Ecj i

Hc = Ec 45

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 46: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Everything is spinning

F = E = Bm middot

SternndashGerlach experiment (1922)

Image courtesy of Teresa Knott

46

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 47: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Everything is spinning

In quantum mechanics particles can have a magnetic moment and a rdquospinrdquo

magnetic m moment

spinning charge

47

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 48: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Everything is spinning conclusion from the

Stern-Gerlach experiment

for electrons spin can ONLY be

up down 48

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 49: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Everything is spinning

new quantum number spin quantum number for electrons spin quantum number can ONLY be

up down 49

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 50: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Spin History Discovered in 1926 by

Goudsmit and Uhlenbeck

Part of a letter by LH Thomas to Goudsmit on March 25 1926 (source Wikipedia)

copy Niels Bohr Library amp Archives American Institute of Physics All rights reserved This content is excludedfrom our Creative Commons license For more information see httpocwmiteduhelpfaq-fair-use

50

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 51: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Paulirsquos exclusions principle

Two electrons in a system cannot have the same quantum numbers

hydrogen

quantum numbers 3s 3p 3dmain n 123 2s 2p

orbital l 01n-1 magnetic m -ll

spin up down 1s

51

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 52: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Periodic table of elements

This image is in the public domain Source Wikimedia Commons52

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 53: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Connection to materials

optical properties of gases

copy unknown All rights reserved This content is excluded from our Creative Commonslicense For more information see httpocwmiteduhelpfaq-fair-use

53

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 54: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Review

bull Review

bull A real world example

bull Everything is spinning

bull Paulirsquos exclusion This image is in the public domain Source Wikimedia Commons

bull Periodic table of elements

54

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 55: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

Literature

bull Greiner Quantum Mechanics An Introduction

bull FeynmanThe Feynman Lectures on Physics

bull wikipedialdquohydrogen atomrdquo ldquoPauli exclusion principlerdquo ldquoperiodic tablerdquo

55

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56

Page 56: Quantum Mechanics: Practice Makes Perfect. It’s a Quantum World:The Theory of Quantum Mechanics 2. Quantum Mechanics: Practice Makes Perfect 3. From Many-Body to Single-Particle;

MIT OpenCourseWarehttpocwmitedu

3021J 1021J 10333J 18361J 2200J Introduction to Modelling and SimulationSpring 2012 For information about citing these materials or our Terms of Use visit httpocwmiteduterms

56