Critical endpoint in the Polyakov-loop extended NJL model
Critical endpoint in the Polyakov-loop extended NJL model
复制标题
DOI：
10.1016/j.physletb.2008.01.075
复制
发表时间：
2007-10
影响因子：
4.4
通讯作者：
K. Kashiwa;H. Kouno;M. Matsuzaki;M. Yahiro
中科院分区：
文献类型：
--
作者：
K. Kashiwa;H. Kouno;M. Matsuzaki;M. Yahiro
研究了新加入标量型八夸克(σ4)相互作用和矢量型四夸克相互作用的Polyakov环扩展Nambu-Jona-Lasinio模型的临界终点和相结构.σ4相互作用使CEP向更高的温度和较低的化学势方向移动，而矢量型相互作用则相反。在零化学势下，σ-4相互作用使手性相变的伪临界温度向去禁闭相变的温度附近移动。
The critical endpoint (CEP) and the phase structure are studied in the Polyakov-loop extended Nambu–Jona-Lasinio model in which the scalar type eight-quark (σ4) interaction and the vector type four-quark interaction are newly added. The σ4interaction largely shifts the CEP toward higher temperature and lower chemical potential, while the vector type interaction does oppositely. At zero chemical potential, the σ4interaction moves the pseudo-critical temperature of the chiral phase transition to the vicinity of that of the deconfinement phase transition.