Dual quark condensate in the Polyakov-loop extended Nambu???Jona-Lasinio model
Dual quark condensate in the Polyakov-loop extended Nambu???Jona-Lasinio model
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DOI：
10.1103/physrevd.80.117901
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发表时间：
2009-08
影响因子：
5
通讯作者：
K. Kashiwa;H. Kouno;M. Yahiro
中科院分区：
文献类型：
--
作者：
K. Kashiwa;H. Kouno;M. Yahiro
利用Polyakov-loop扩展的Nambu-Jona-Lasinio （PNJL）模型对最近提出的双夸克凝聚{sigma}{sup (n)}作为Z{sub 3}对称性自发破断的新序参数进行了评价，其中n为圈数。Polyakov-loop扩展的Nambu-Jona-Lasinio模型很好地再现了最近测量的{sigma}{sup(1)}上的晶格QCD数据。在Polyakov-loop扩展的nambujona - lasinio模型中，较高温度下的双夸克凝聚体{sigma}{sup (n)}对矢量型四夸克相互作用的强度敏感，因此是确定强度的一个很好的量。
The dual quark condensate {sigma}{sup (n)} proposed recently as a new order parameter of the spontaneous breaking of the Z{sub 3} symmetry are evaluated by the Polyakov-loop extended Nambu-Jona-Lasinio (PNJL) model, where n are winding numbers. The Polyakov-loop extended Nambu-Jona-Lasinio model well reproduces lattice QCD data on {sigma}{sup (1)} measured very lately. The dual quark condensate {sigma}{sup (n)} at higher temperatures is sensitive to the strength of the vector-type four-quark interaction in the Polyakov-loop extended Nambu-Jona-Lasinio model and hence a good quantity to determine the strength.