Real-Time Thermal Schwinger-Dyson Equation for Quark Self-energy in Landau Gauge  

作　　者：ZHOU Bang-Rong 

机构地区：College of Physical Sciences, Graduate School of the Chinese Academy of Sciences, Beijing 100049, China

出　　处：《Communications in Theoretical Physics》2005年第5X期873-878,共6页理论物理通讯（英文版）

基　　金：中国科学院资助项目

摘　　要：By means of a formal expression of Cornwall-Jackiw-Tomboulis effective potential for quark propagator at finite temperatures and finite quark chemical potentials, we derive the real-time thermal Schwinger-Dyson equation for quark propagator in Landau gauge. Denote the inverse quark propagator by A（p^2）ψ - B（p^2）, we argue that, when temperature T is lower than the given infrared momentum cutoff pc, A（p^2） = 1 is a feasible approximation and can be assumed in discussions of chiral symmetry phase transition problem in QCD.

关 键 词：real-time thermal QCD Schwinger-Dyson equation quark propagator Landau gauge 

分 类 号：O572.33[理学—粒子物理与原子核物理]