Charged pion condensation in anti-parallel electromagnetic fields and nonzero isospin density

作     者：Jingyi Chao Mei Huang Andrey Radzhabov 巢静宜;黄梅;Andrey Radzhabov

作者机构：Institute of Modern PhysicsChinese Academy of SciencesLanzhou 730000China School of Nuclear Science and TechnologyUniversity of Chinese Academy of SciencesBeijing 100049China Matrosov Institute for System Dynamics and Control Theory SB RAS Lermontov str.134664033IrkutskRussia 

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

年 卷 期：2020年第44卷第3期

页      面：101-110页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0827[工学-核科学与技术] 082701[工学-核能科学与工程] 

基　　金：supported by the NSFC under Grant number:11605254 Major State Basic Research Development Program in China(2015CB856903) supported by the NSFC under Grant No.11725523,11735007 and 11261130311(CRC 110 by DFG and NSFC) supported by the CAS President’s international fellowship initiative(2017VMA0045) 

主　　题：pion condensate electromagnetic fields weakly first order phase transition 

摘      要：The formation of charged pion condensate in anti-parallel electromagnetic fields and in the presence of the isospin chemical potential is studied in the two-flavor Nambu-Jona-Lasinio *** method of Schwinger proper time is extended to explore the quantities in the off-diagonal flavor space,*** charged *** this framework,π^± are treated as bound states of quarks and not as point-like charged *** isospin chemical potential plays the role of a trigger for charged pion *** obtain the associated effective potential as a function of the strength of the electromagnetic fields and find that it contains a sextic term which possibly induces a weak first order phase *** dependence of pion condensation on model parameters is investigated.