Quarks mass function at finite density in real-time formalism

Abstract

Chiral symmetry restoration of quarks is investigated at finite density in quantum chromodynamics. The effective quark mass is calculated with the Schwinger-Dyson equation in the real-time formalism without the instantaneous exchange approximation. We present some properties of the quark mass functions and the quark propagator at zero temperature.

Comments: 11 pages, 5 figures. Some statements and Eq.(2.15) in the previous version are modified