标题： 介子-PNJL模型中的相图 显示英文标题

标题： Phase diagrams in the Hadron-PNJL model

摘要： 两方程状态（Two-EoS）模型用于描述在重离子碰撞中形成的致密热物质中的强子-夸克相变。 非线性Walecka模型用于描述强子相。 对于夸克相，使用与Polyakov环场耦合的Nambu–Jona-Lasinio模型（PNJL）来包括手征和（解）禁闭动力学。 相图是从Gibbs条件推导出来的，并与没有禁闭的Hadron-NJL模型的结果进行比较。 如同Hadron-NJL情况一样，观察到一级相变，但在更高温度下有一个临界终点，这是禁闭机制在相变附近减少夸克物质自由度的结果。 特别关注同位旋不对称物质中的相变。 在高重子密度和较低温度下发现了有趣的同位旋效应，这些效应也出现在其他夸克模型中，如MIT-Bag模型和NJL模型。 建议了一些可能的观测信号，以在中等能量的重离子碰撞（HIC）实验中进行探测。 显示英文摘要

摘要： The two-Equation of State (Two-EoS) model is used to describe the hadron-quark phase transition in dense-hot matter formed in heavy-ion collisions. The non-linear Walecka model is used to describe the hadronic phase. For the quark phase, the Nambu--Jona-Lasinio model coupled to Polyakov-Loop fields (PNJL) is used to include both the chiral and (de)confinement dynamics. The phase diagrams are derived from the Gibbs conditions and compared with the results obtained in the Hadron-NJL model without confinement. As in the Hadron-NJL case a first order transition is observed, but with a Critical-End-Point at much higher temperature, consequence of the confinement mechanism that reduces the degrees of freedom of the quark matter in proximity of the phase transition. Particular attention is devoted to the phase transition in isospin asymmetric matter. Interesting isospin effects are found at high baryon density and reduced temperatures, in fact common also to other quark models, like MIT-Bag and NJL model. Some possible observation signals are suggested to probe in Heavy-Ion Collision (HIC) experiments at intermediate energies.