Studies of Wigner-Weyl solution and external magnetic field in an NJL model

doi:10.1103/PhysRevD.94.096003

	Studies of Wigner-Weyl solution and external magnetic field in an NJL model
	Wang, Qing-Wu 1; Cui, Zhu-Fang 2,4; Zong, Hong-Shi 2,3,4
刊名	PHYSICAL REVIEW D
	2016-11-07
卷号	94 期号:9 页码:9
ISSN号	2470-0010
DOI	10.1103/PhysRevD.94.096003
通讯作者	Wang, Qing-Wu(qw.wang@scu.edu.cn)
英文摘要	In this paper, we explore the dynamical chiral symmetry breaking by employing a two-flavor Nambu-Jona-Lasinio (NJL) model with constant external magnetic field. After changing the coupling strength of the NJL model, we found that the Wigner-Weyl solution and Nambu-Goldstone solution of the gap equation could coexist. Even though the gap equation only has Nambu-Goldstone solution at zero temperature, the Wigner-Weyl solution may appear when magnetic field strength and temperature are nonzero. For the Nambu-Goldstone solution, magnetic field and temperature have opposite impact on the chiral dynamical mass. In the chiral limit, the magnetic field dependence of chiral dynamical mass reveals the existence of inverse magnetic catalysis for the Wigner-Weyl solution. However, the two phases have different responses to the magnetic field and temperature in the chiral limit but the same beyond chiral limit. Furthermore, the order of the transition from the Nambu-Goldstone phase to Wigner-Weyl phase depends on the choice of model parameters. We have also calculated the susceptibilities of dynamical mass with respect to the temperature.
WOS关键词	DYSON-SCHWINGER EQUATIONS ; JONA-LASINIO MODEL ; GROSS-NEVEU MODEL ; ELECTROMAGNETIC-FIELD ; FINITE-TEMPERATURE ; PHASE-TRANSITIONS ; DYNAMICAL MODEL ; QCD ; SUPERCONDUCTIVITY ; SUSCEPTIBILITIES
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000415787500005
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/22757]
专题	中国科学院紫金山天文台
通讯作者	Wang, Qing-Wu
作者单位	1.Sichuan Univ, Dept Phys, Chengdu 610064, Sichuan, Peoples R China 2.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China 3.Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China 4.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Wang, Qing-Wu,Cui, Zhu-Fang,Zong, Hong-Shi. Studies of Wigner-Weyl solution and external magnetic field in an NJL model[J]. PHYSICAL REVIEW D,2016,94(9):9.
APA	Wang, Qing-Wu,Cui, Zhu-Fang,&Zong, Hong-Shi.(2016).Studies of Wigner-Weyl solution and external magnetic field in an NJL model.PHYSICAL REVIEW D,94(9),9.
MLA	Wang, Qing-Wu,et al."Studies of Wigner-Weyl solution and external magnetic field in an NJL model".PHYSICAL REVIEW D 94.9(2016):9.