Real-time thermal Schwinger-Dyson equation for quark self-energy in Landau gauge

Details Real-time thermal Schwinger-Dyson equation for quark self-energy in Landau gauge Real-time thermal Schwinger-Dyson equation for quark self-energy in Landau gauge

2005-12-05

arxiv.org/abs/hep-th/0512043v1

Commun.Theor.Phys.44:873-878,2005

Physics

High Energy Physics

High Energy Physics - Theory

8 pages, Latex, no figure

Scientific paper

By means of a formal expression of the Cornwall-Jackiw-Tomboulis effective potential for quark propagator at finite temperature and finite quark chemical potential, we derive the real-time thermal Schwinger-Dyson equation for quark propagator in Landau gauge. Denote the inverse quark propagator by $A(p^2)\not{p}-B(p^2)$, we argue that, when temperature $T$ is less than the given infrared momentum cutoff $p_c$, $A(p^2)=1$ is a feasible approximation and can be assumed in discussions of chiral symmetry phase transition problem in QCD.

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