摘要
基于三味Polyakov-looped Nambu-Jona-Lasinio(pNJL)模型,通过研究手征凝聚、pion凝聚和Polyakov圈之间的相互作用,研究了温度、重子化学势和同位旋化学势依赖的三维QCD相图结构。虽然pNJL模型得到的正常夸克物质相、pion超流相和Sarma相的结构以及相边界与NJL模型定性上相似,但Polyakov圈的引入大大扩展了pion超流相和Sarma相的存在区域,并导致临界点出现在较高的温度。由于有效地引入了胶子动力学的贡献,与NJL模型相比,该研究有望对三维QCD相图给出更可靠的预测。
Based on the three-flavor Polyakov-looped Nambu−Jona-Lasinio(pNJL)model,we have studied the structure of the three-dimensional QCD phase diagram with respect to the temperature,the baryon chemical potential,and the isospin chemical potential,by investigating the interplay among the chiral quark condensate,the pion condensate,and the Polyakov loop.While the pNJL model leads to qualitatively similar structure of the normal quark phase,the pion superfluid phase,and the Sarma phase as well as their phase boundaries,when compared to the NJL model,the inclusion of the Polyakov loop enlarges considerably the areas of the pion superfluid phase and the Sarma phase,and leads to critical end points at higher temperatures.With the contribution of the gluon dynamics effectively included,the present study is expected to give a more reliable prediction of the three-dimensional QCD phase diagram compared to that in the NJL model.
作者
刘鹿蒙
徐骏
彭光雄
LIU Lumeng;XU Jun;PENG Guangxiong(School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China;School of Physics Science and Engineering,Tongji University,Shanghai 200092,China;Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201210,China;Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China;School of Nuclear Science and Technology,University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《原子核物理评论》
CAS
CSCD
北大核心
2023年第4期493-501,共9页
Nuclear Physics Review
基金
中国科学院战略性先导科技专项(B类)(XDB34030000)
国家自然科学基金资助项目(12375125,11875052,11575190,11135011)
中央高校基本科研业务费专项资金。
