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题名: The Wigner solution and QCD phase transitions in a modified PNJL model
作者: Cui, ZF;  Shi, C;  Sun, WM;  Wang, YL;  Zong, HS
刊名: EUROPEAN PHYSICAL JOURNAL C
出版日期: 2014
卷号: 74, 期号:2, 页码:2782
关键词: DYSON-SCHWINGER EQUATIONS ;  FINITE-TEMPERATURE ;  QUANTUM CHROMODYNAMICS ;  VECTOR INTERACTION ;  RESONANCE PHYSICS ;  QUARK MASS ;  DIAGRAM ;  DECONFINEMENT ;  CONDENSATE ;  PROPAGATOR
学科分类: Physics
DOI: 10.1140/epjc/s10052-014-2782-x
通讯作者: Cui, ZF (reprint author), Nanjing Univ, Inst Acoust, MOE, Dept Phys,Key Lab Modern Acoust, Nanjing 210093, Jiangsu, Peoples R China.
部门归属: [Cui, Zhu-fang
英文摘要: By employing some modification to the widely used two-flavor Polyakov-loop extended Nambu-Jona-Lasinio (PNJL) model, we discuss the Wigner solution of the quark gap equation at finite temperature and zero quark chemical potential beyond the chiral limit, and then we try to explore its influence on the chiral and deconfinement phase transitions of QCD at finite temperature and zero chemical potential. The discovery of the coexistence of the Nambu and the Wigner solutions of the quark gap equation with nonzero current quark mass at zero temperature and zero chemical potential, as well as their evolutions with temperature, is very interesting for the studies of the phase transitions of QCD. According to our results, the chiral phase transition might be of first order (while the deconfinement phase transition is still a crossover, as in the normal PNJL model), and the corresponding phase transition temperature is lower than that of the deconfinement phase transition, instead of coinciding with each other, which are not the same as the conclusions obtained from the normal PNJL model. In addition, we also discuss the sensibility of our final results on the choice of model parameters.
资助者: National Natural Science Foundation of China [11275097, 10935001, 11047020, 11274166, 11075075]; National Basic Research Program of China [2012CB921504]; Research Fund for the Doctoral Program of Higher Education [2012009111002]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000346789000001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15815
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Recommended Citation:
Cui, ZF,Shi, C,Sun, WM,et al. The Wigner solution and QCD phase transitions in a modified PNJL model[J]. EUROPEAN PHYSICAL JOURNAL C,2014,74(2):2782.
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