Gap equation in finite-temperature three-dimensional QED beyond the bare-vertex approximation

Details Gap equation in finite-temperature three-dimensional QED beyond the bare-vertex approximation Gap equation in finite-temperature three-dimensional QED beyond the bare-vertex approximation

1998-05-22

arxiv.org/abs/hep-ph/9805420v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 Latex pages, 4 postscript figures

Scientific paper

10.1088/1126-6708/1999/03/020

Dynamical mass generation in a three-dimensional version of finite-temperature QED is studied with the help of Schwinger-Dyson equations in the real-time formalism. We go beyond the bare-vertex approximation and include wave-function renormalization effects. This introduces a system of two integral equations which are solved numerically. In order to increase the reliability of the results, fermion and photon self-energies varying independently with energy and momentum are used. The method applied enables a detailed study of the behaviour of the theory with increasing temperature and number of fermion flavours.

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