A new algorithm towards a quasi-Wigner solution of the gap equation beyond the chiral limit

doi:10.1088/1361-6471/aadeb0

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	A new algorithm towards a quasi-Wigner solution of the gap equation beyond the chiral limit
	Xu, SS ; Cui, ZF ; Sun, A 2; Zong, HS
刊名	JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
	2018
卷号	45 期号:10 页码:105001
关键词	DYSON-SCHWINGER EQUATIONS QCD MODEL MASS PI
ISSN号	0954-3899
DOI	10.1088/1361-6471/aadeb0
英文摘要	We propose a new algorithm to solve the quasi-Wigner solution of the gap equation beyond the chiral limit. Employing a Gaussian gluon model and rainbow truncation, we find that the quasi-Wigner solution exists in a limited region of quark mass, m < 43.1 MeV, at zero temperature T and zero chemical potential mu. The difference between Comwall-Jackiw-Tomboulis (CJT) effective actions of quasi-Wigner and Nambu-Goldstone solutions shows that the Nambu-Goldstone solution is more stable. Moreover, the quasi-Wigner solution is studied at finite temperature and chemical potential, the infrared mass function of the quasi-Wigner solution is negative and decreases along with T at mu = 0. Its susceptibility is divergent at certain temperatures with small m, and this temperature decreases along with m. Taking T = 80 MeV as an example, the quasi-Wigner solution is shown at finite chemical potential up to mu = 350 MeV as well as Nambu solution, the coexistence of these two solutions is used to analyze the properties of phase transition. The first order chiral phase transition line is determined by the difference of CJT effective actions.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/22805]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China 2.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China 3.Nanjing Univ, Coll Engn & Appl Sci, Nanjing 210093, Jiangsu, Peoples R China 4.Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Xu, SS,Cui, ZF,Sun, A,et al. A new algorithm towards a quasi-Wigner solution of the gap equation beyond the chiral limit[J]. JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS,2018,45(10):105001.
APA	Xu, SS,Cui, ZF,Sun, A,&Zong, HS.(2018).A new algorithm towards a quasi-Wigner solution of the gap equation beyond the chiral limit.JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS,45(10),105001.
MLA	Xu, SS,et al."A new algorithm towards a quasi-Wigner solution of the gap equation beyond the chiral limit".JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS 45.10(2018):105001.