UA(1)symmetry restoration at high baryon density

作     者：李嘉宁 桂进 庄鹏飞 Jianing Li;Jin Gui;Pengfei Zhuang

作者机构：Department of PhysicsTsinghua UniversityBeijing 100084China 

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2023年第47卷第10期

页      面：120-129页

核心收录：

学科分类：07[理学] 08[工学] 070205[理学-凝聚态物理] 0827[工学-核科学与技术] 082701[工学-核能科学与工程] 0702[理学-物理学] 

基　　金：the National Natural Science Foundation of China(11890712 12075129 2018YFA0306503 2020B0301030008) 

主　　题：UA(1)symmetry chiral phase transition finite temperature field theory 

摘      要：We study the relation between chiral and UA(1)symmetries in the quark-meson *** quarks and mesons are described in mean field approximation,the topological susceptibility characterizing the UA(1)breaking comprises two components:one controlled by the condensate and the other by the meson *** UA(1)restoration is governed by the competition of these *** a hot medium,the condensates ***,the fluctuation is ***,the UA(1)symmetry cannot be solely restored via the temperature ***,the baryon density reduces the condensates and fluctuation,and thereby,the UA(1)symmetry can only be restored in a dense or dense and hot *** strange condensate plays a weak role in the susceptibility,and the chiral and UA(1)symmetry restorations occur almost at the same critical point.