Part B: Quantum Electrodynamics (QED)

B – 2. Effective approach to QED: Green's function method

B – 2. Effective approach to QED: Green's function method

B – 2. Effective approach to QED: Green's function method

B – 2. Effective approach to QED: Green's function method

B – 2. Effective approach to QED: Green's function method

B – 2. Effective approach to QED: Green's function method

B – 2. Effective approach to QED: Green's function method

B – 2. Effective approach to QED: Green's function method - 2

B – 2. Effective approach to QED: Green's function method - 2

B – 2. Effective approach to QED: Green's function method - 2

B – 2. Effective approach to QED: Green's function method - 2

B – 2. Effective approach to QED: Green's function method - 2

B – 2. Effective approach to QED: Green's function method - 2

B – 2. Effective approach to QED: Green's function method - 3

B – 2. Effective approach to QED: Green's function method - 3

B – 2. Effective approach to QED: Green's function method - 3

B – 2. Effective approach to QED: Green's function method - 3

2

B – 4. Feynman diagrams of QED – Feynman rules

External lines:

B – 4. Feynman diagrams of QED

Internal lines:

B – 4. Feynman diagrams of QED

B – 4. Feynman diagrams of QED

Example: Elastic electron-muon scattering:

Transition probability:

B – 4. Feynman diagrams of QED

B – 5. Introduction to regularization and renormalization of QED

Infinities in loops:

B – 5. Introduction to regularization and renormalization of QED

Infinities in loops:

B – 5. Introduction to regularization and renormalization of QED

Dressed fermionic propagator:

B – 5. Introduction to regularization and renormalization of QED

Higher order corrections:

B – 5. Introduction to regularization and renormalization of QED

Pauli-Villars regularization:

B – 5. Introduction to regularization and renormalization of QED

Regularization schemes:

B – 5. Introduction to regularization and renormalization of QED

Electron mass renormalization:

B – 5. Introduction to regularization and renormalization of QED

Electron mass renormalization:

B – 5. Introduction to regularization and renormalization of QED

Electron self-energy loop renormalization:

B – 5. Introduction to regularization and renormalization of QED

Electron self-energy loop renormalization:

B – 5. Introduction to regularization and renormalization of QED

Fermionic loop - regularization:

B – 5. Introduction to regularization and renormalization of QED

Charge renormalization:

B – 5. Introduction to regularization and renormalization of QED

Charge renormalization:

B – 5. Introduction to regularization and renormalization of QED

Vertex corrections:

B – 5. Introduction to regularization and renormalization of QED

Vertex corrections:

B – 5. Introduction to regularization and renormalization of QED

Lamb shift:

B – 5. Introduction to regularization and renormalization of QED

Lamb shift: