One-particle and collective electron spectra in hot and dense QED and their gauge dependence

Details One-particle and collective electron spectra in hot and dense QED and their gauge dependence One-particle and collective electron spectra in hot and dense QED and their gauge dependence

1998-05-20

arxiv.org/abs/hep-ph/9805385v1

Mod.Phys.Lett. A13 (1998) 1719-1728

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, latex, no figures

Scientific paper

10.1142/S0217732398001790

The one-particle electron spectrum is found for hot and dense QED and its properties are investigated in comparison with the collective spectrum. It is shown that the one-particle spectrum (in any case its zero momentum limit) is gauge invariant, but the collective spectrum, being qualitatively different, is always gauge dependent. The exception is the case $m,\mu=0$ for which the collective spectrum long wavelength limit demonstrates the gauge invariance as well.

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