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Self-organized plasma confinement
RT-1 magnetospheric plasma
application: advanced fusion, antimatter plasma
Theoretical statements
• 力学の時空=渦 • micro = canonical / macro = noncanonical • 階層性= 葉層構造 • 葉層の埋め込み=自己組織化するマクロ構造 References [1]吉田善章, 時空の問題として見るプラズマ物理 ――〈渦〉とは何かをめぐって,
日本物理学会誌 68 (2013), 74—81. [2]ZY & P.J. Morrison, Unfreezing Casimir invariants: singular perturbations
giving rise to forbidden instabilities, http://arxiv.org/abs/1303.0887.
general Hamiltonian system
• Hamiltonian mechanics is dictated by { , } (Poisson bracket) and H (Hamiltonian)
{ }
{ } )(),(,
,
uFJuGFG
HFFdtd
uu ∂∂=
=
−
==0
0 symplectic Canonical
II
J
Space (symplectic geometry) Matter (energy)
渦
Foliated phase space of non-canonical Hamiltonian system
• Ker(J) = Coker(J) ={ grad C (u) }
The “effective” phase space of constrained dynamics
•Equilibrium points? •Stability? •Thermal equilibrium?
Casimir element
Scale hierarchy of magnetized particles
( ) φqVVVmH dbc +++= 222
2
( ) φµω qVVmH dbcc +++= 22
2
“quasi-particle”
Coarse-graining
),;,;,(),;,;,( |||| θθ θζµϑθζϑ PpPpp ccc →=z
=→
=
c
cnc
c
c
c
JJJ
JJ
JJ
0000000
000000
Coarse-graining non-canonization
Grand-canonical distribution on Casimir leaf
( ) 0=−−− MENS γβαδ
∫∫∫∫
=
=
=
−=
zdfM
zdfHE
zdfN
zdffS
c
6
6
6
6
µ
log
( )µγβ −−= cHcf exp
Quasi-particle number Chemical potential
Density clump in lab-frame space
thermodynamic distribution on a Casimir leaf embedding into the lab-frame yields “structure”
Casimir foliation of infinite-dimensional phase space
• プラズマ・流体を「場」のHamilton系と考える 無限次元の位相空間(関数空間)
• helicity によって位相空間は葉層化する
• helicity は「渦」のトポロジーを計量する
ZY & R.L. Dewar, Helical bifurcation and tearing mode in a plasma—a description based on Casimir foliation, J. Phys. A: Math. Theor. 45 (2012) 365502 (36pp).
circulation =identity of vortex
[ ]
( )hHcqm
dddtd
t
tLt
tL
+=−∇=××∇+∂+=
=⋅××∇+∂=
⋅ ∫∫
ϕϕVPPAVP
xVPPxP
)()/(
)()()(
obeys momentum canonical if
0
µµ Vxdtd
= µµ Uxdsd
=
Relativity destroys the “synchronity” of a cycle.
“twists” space-time generate circulation ∫ −
)(tLTdS1γ
Pure-state vorticity in relativistic space-time