Wigner Solution to the Quark Gap Equation in the Nonzero Current Quark Mass  

作　　者：JIANG Yu GONG Hao SUN Wei-Min ZONG Hong-Shi 蒋宇;宫昊;孙为民;宗红石(Center for Statistical and Theoretical Condensed Matter Physics,Zhejiang Normal University,Jinhua 321004;Department of Physics,Nanjing University,Nanjing 210093;Joint Center for Particle,Nuclear Physics and Cosmology,Nanjing 210093)

机构地区：[1]Center for Statistical and Theoretical Condensed Matter Physics,Zhejiang Normal University,Jinhua 321004 [2]Department of Physics,Nanjing University,Nanjing 210093 [3]Joint Center for Particle,Nuclear Physics and Cosmology,Nanjing 210093

出　　处：《Chinese Physics Letters》2012年第4期31-34,共4页中国物理快报（英文版）

基　　金：Supported in part by the Postdoctoral Science Foundation of China under Grant No 20100471308;the National Natural Science Foundation of China under Grant Nos 11105122,10935001 and 11075075;the Priority Academic Program Development of Jiangsu Higher Education Institution.

摘　　要：From the graphical representation of the Dyson-Schwinger equation for the dressed gluon propagator it is shown that the gluon propagator in the Wigner phase should be different from that in the Nambu phase.Based on this analysis,we propose a modified gluon propagator to reflect this fact.With such a modified gluon propagator,in the framework of the Nambu Jona Lasinio (NJL) model,we obtain the Wigner solution to the quark gap equation at finite current quark mass,which has not been found in literature.This provides a new point of view to study partial restoration of chiral symmetry at finite temperature and chemical potential.

关 键 词：potential PHASE QUARK 

分 类 号：O57[理学—粒子物理与原子核物理]