Quark Loop Effects on Dressed Gluon Propagator in Framework of Global Color Symmetry Model  

作　　者：ZONG Hong-Shi 

机构地区：[1]Department of Physics, Nanjing University, Nanjing 210093, China [2]joint Center for Particle, Nuclear Physics and Cosmology, Nanjing 210093, China [3]CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, China

出　　处：《Communications in Theoretical Physics》2006年第4X期717-722,共6页理论物理通讯（英文版）

基　　金：The project supported in part by National Natural Science Foundation of China under Grant Nos. 10575050 and 10135030 and the Research Fund for the Doctoral Program of Higher Education under Grant No. 20030284009.

摘　　要：Based on the global color symmetry mode/ （GCM）, a method for obtaining the quark loop effects on the dressed gluon propagator in GCM is developed. In the chiral limit, it is found that the dressed gluon propagator containing the quark loop effects in the Nambu-Goldstone and Wigner phases are quite different. In solving the quark self-energy functions in the two different phases and subsequent study of bag constant one shouM use the above dressed gluon propagator as input. The above approach for obtaining the current quark mass effects on the dressed gluon propagator is quite general and can also be used to calculate the chemical potential dependence of the dressed gluon propagator.

关 键 词：quark loop effects GCM explicit and dynamical chiral symmetry breaking 

分 类 号：O57[理学—粒子物理与原子核物理]