Determination of the strength of the vector-type four-quark interaction in the entanglement Polyakov-loop extended Nambu―Jona-Lasinio model
Determination of the strength of the vector-type four-quark interaction in the entanglement Polyakov-loop extended Nambu―Jona-Lasinio model
复制标题
纠缠波利亚科夫环扩展 Nambu―Jona-Lasinio 模型中矢量型四夸克相互作用强度的确定
DOI：
10.1103/physrevd.90.037901
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发表时间：
2014
影响因子：
5
通讯作者：
and M. Yahiro
中科院分区：
文献类型：
--
作者：
J. Sugano;J. Takahashi;M. Ishii;H. Kouno;and M. Yahiro
我们根据最近的双味Wilson费米子晶格QCD模拟结果，确定了纠缠Polyakov-loop扩展Nambu-Jona-Lasinio （EPNJL）模型中矢量型四夸克相互作用的强度。夸克数密度由斯特凡-玻尔兹曼极限归一化。由小重子化学势和温度（高于定义跃迁的伪临界温度）下归一化夸克数密度确定的强度为，其中为标度型四夸克相互作用的强度。本文采用双相模型对平面上的强子-夸克相变进行了研究，其中强子相采用量子流体动力学模型，夸克相采用EPNJL模型。当，跃迁的临界重子化学势为零，这解释了在强子-夸克混合星模型框架下中子星的两个太阳质量测量。
We determine the strengthof the vector-type four-quark interaction in the entanglement Polyakov-loop extended Nambu–Jona-Lasinio (EPNJL) model from the results of recent lattice QCD simulations with two-flavor Wilson fermion. The quark number density is normalized by the Stefan-Boltzmann limit. The strength determined from the normalized quark number density at small baryon chemical potentialand temperature(which is higher than the pseudocritical temperatureof the deconfinement transition) is, whereis the strength of the scalar-type four-quark interaction. We explore the hadron-quark phase transition in the-plane by using the two-phase model in which the quantum hadrodynamics model is used for the hadron phase and the EPNJL model is used for the quark phase. When, the critical baryon chemical potential of the transition at zerois, which accounts for two-solar-mass measurements of neutron stars in the framework of the hadron-quark hybrid star model.