Dynamically Running Mass of Light Quark and QCD
Vacuum Condensates
ZHOU Li-Juan;PING Rong-Gang;MA Wei-Xing
【期刊名称】《理论物理通讯（英文版）》 【年(卷),期】2004(042)012
【摘要】Based on Dyson-Schwinger equations (DSEs) in \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. 【总页数】9页(875-883) 【关键词】quark
mass;quark
propagator;Dyson-Schwinger
equations;non-perturbative QCD
【作者】ZHOU Li-Juan;PING Rong-Gang;MA Wei-Xing
【作者单位】Department of Information and Computing Sciences, Guangxi University of Technology, Liuzhou 545006, China;Department of Physics, Guangxi University, Nanning 530004, China;Institute of High Energy Physics, Academia Sinica, Beijing 100039, China;Department of Information and Computing Sciences, Guangxi University of Technology, Liuzhou 545006, China;Department of Physics, Guangxi University, Nanning 530004, China;Institute of High Energy Physics, Academia Sinica, Beijing 100039, China 【正文语种】中文 【中图分类】 【文献来源】
https://www.zhangqiaokeyan.com/academic-journal-cn_communications-theoretical-physics_thesis/0201241656270.html 【相关文献】
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Dynamically Running Mass of Light Quark and QCD Vacuum Condensates
