Gauge invariance of the beta-function in nonrelativistic quantum electrodynamics

Details Gauge invariance of the beta-function in nonrelativistic quantum electrodynamics Gauge invariance of the beta-function in nonrelativistic quantum electrodynamics

1996-08-10

arxiv.org/abs/cond-mat/9608051v1

Nucl.Phys. B493 (1997) 707-718

Physics

Condensed Matter

14 pages, 2 encapsulated postscript figures, LaTeX, uses elsevier and epsf

Scientific paper

10.1016/S0550-3213(97)00148-X

Recently there has been much interest in gauge theories applied to condensed
matter physics. I show that for a system of nonrelativistic electrons coupled
to a U(1) gauge field in the presence of a Fermi surface, the beta-function to
one-loop order is, for a particular family of gauge-choices, independent of the
gauge-choice.

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