Quark Gluon Condensate, Virtuality and Susceptibility of QCD Vacuum  

作　　者：ZHOU Li-Juan WU Qing MA Wei-Xing 

机构地区：[1]Collaboration Group of Hadron Physics and Non-perturbative QCD Study, Guangxi University of Technology, Liuzhou 545006, China [2]Department of Physics, College of Science, Qingdao University, Qingdao 266071, China [3]Institute of High Energy Physics, the Chinese Academy of Sciences, P.O. Box 918, Beijing 100049, China

出　　处：《Communications in Theoretical Physics》2008年第7期161-174,共14页理论物理通讯（英文版）

基　　金：National Natural Science Foundation of China under Grant Nos.10647002 and 10565001;the Natural Science Foundation of Guangxi under Grant Nos.0575020,0542042,and 0481030

摘　　要：We study vacuum of QCD in this work.The structure of non-local quark vacuum condensate,values ofvarious local quark and gluon vacuum condensates,quark-gluon mixed vacuum condensate,quark and gluon virtualityin QCD vacuum state,quark dynamical mass and susceptibility of QCD vacuum state to external field are predicted byuse of the solutions of Dyson Schwinger equations in'rainbow'approximation with a modeling gluon propagator andthree different sets of quark-quark interaction parameters.Our theoretical predictions are in good agreement with thecorrespondent empirical values used widely in literature,and many other theoretical calculations.The quark propagatorand self-energy functions are also obtained from the numerical solutions of Dyson-Schwinger equations.This work iscentrally important for studying non-perturbative QCD,and has many important applications both in particle andnuclear physics.

关 键 词：QCD vacuum condensates susceptibility of QCD vacuum QCD 

分 类 号：O46[理学—电子物理学]