Temperature Expansions for Magnetic Systems

Details Temperature Expansions for Magnetic Systems Temperature Expansions for Magnetic Systems

1996-01-10

arxiv.org/abs/hep-th/9601048v1

Annals Phys. 249 (1996) 582-602

Physics

High Energy Physics

High Energy Physics - Theory

25 pages, RevTeX

Scientific paper

10.1006/aphy.1996.0083

We derive finite temperature expansions for relativistic fermion systems in the presence of background magnetic fields, and with nonzero chemical potential. We use the imaginary-time formalism for the finite temperature effects, the proper-time method for the background field effects, and zeta function regularization for developing the expansions. We emphasize the essential difference between even and odd dimensions, focusing on $2+1$ and $3+1$ dimensions. We concentrate on the high temperature limit, but we also discuss the $T=0$ limit with nonzero chemical potential.

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