PNJL模型中β平衡2+1味夸克物质的研究
Study of Beta Equilibrated 2+1 Flavor Quark Matter in PNJL Model
摘要：
我们报告的第一个案例研究的2+1味强相互作用物质在$β-$平衡，使用Polyakov $-$ Nambu $-$ Jona-Lasinio模型的相图。讨论了有关热力学观测量的物理特性。与Nambu-Jona-Lasinio模型中相应的观测量进行了比较分析。我们发现，在一些热力学量，如声速，比热，各种数密度以及熵的模型之间的明显差异。本研究有望使我们更好地了解重离子碰撞实验中产生的超致密物质在我们理解宇宙中超大质量恒星核心内物质性质方面所起的作用。
英文摘要：
We report a first case study of the phase diagram of 2+1 flavor strongly interacting matter in $β-$equilibrium, using the Polyakov$-$Nambu$-$Jona-Lasinio model. Physical characteristics of relevant thermodynamic observables have been discussed. A comparative analysis with the corresponding observables in the Nambu-Jona-Lasinio model is presented. We find distinct differences between the models in terms of a number of thermodynamic quantities like the speed of sound, specific heat, various number densities as well as entropy. The present study is expected to give us a better insight into the role that the superdense matter created in heavy ion collision experiments play in our understanding of the properties of matter inside the core of supermassive stars in the Universe.
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