Dynamically Running Mass of Light Quark and QCD Vacuum Condensates
ZHOU Li-Juan; Ping RG(平荣刚); Ma WX(马维兴)
刊名理论物理通讯(英文版)
2004
期号7页码:875-883
关键词quark mass quark propagator Dyson-Schwinger equations non-perturbative QCD
英文摘要Based on Dyson-Schwinger equations (DSEs) in "rainbow" approximation, the dynamically running mass of light quark and QCD vacuum condensate are investigated. The structure of non-local quark vacuum condensate, the values of local vacuum condensate of quarks and quark-gluon mixture, and dynamical transition of quark mass from current quark to constituent quark are illustrated. At the same time, according to the knowledge and experience learned from an extensive study of the solutions of DSEs, a parameterized form of confining quark propagator is suggested for a practical use. The new parameterized form of quark propagator is analytic everywhere in the finite complex p2-plane and has no Lehmann representation. The predictions for p2-dependence of effective quark masses, Mf(p2), defined by the self-energy functions Af(p2) and Bf(p2), both from the numerical solutions of DSEs and from its parameterized form, are shown dynamically. Our conclusion is that all numerical results are consistent with empirical values used in QCD sum rules and lattice QCD calculations. For a qualitative study, the parameterized form is a sufficiently good approximation to confining quark propagator.
收录类别CNKI
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/215944
专题中国科学院高能物理研究所_理论物理室_期刊论文
中国科学院高能物理研究所_实验物理中心
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ZHOU Li-Juan,Ping RG,Ma WX. Dynamically Running Mass of Light Quark and QCD Vacuum Condensates[J]. 理论物理通讯(英文版),2004(7):875-883.
APA ZHOU Li-Juan,平荣刚,&马维兴.(2004).Dynamically Running Mass of Light Quark and QCD Vacuum Condensates.理论物理通讯(英文版)(7),875-883.
MLA ZHOU Li-Juan,et al."Dynamically Running Mass of Light Quark and QCD Vacuum Condensates".理论物理通讯(英文版) .7(2004):875-883.
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