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

Abstract

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.

9 pages, latex, no figures

References in corpus (1)

• Fermi Excitations in Hot and Dense Quark-Gluon Plasma

Cited by in corpus (5)

• Resonant Relaxation in Electroweak Baryogenesis
• Fermi spectra and their gauge invariance in hot and dense Abelian and non-Abelian theories
• Fermionic dispersion relations at finite temperature and non-vanishing chemical potentials in the minimal standard model
• Probing Physics in the Standard Model and Beyond with Electroweak Baryogenesis and Effective Theories of the Strong Interactions
• Gauge Independence and Relativistic Electron Dispersion Equation in Dense Media