New algorithm to study the pseudo-Wigner solution of the quark gap equation in the framework of the (2+1)-flavor NJL model

doi:10.1103/PhysRevD.99.076006

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	New algorithm to study the pseudo-Wigner solution of the quark gap equation in the framework of the (2+1)-flavor NJL model
	Li, CM ; Yin, PL ; Zong, HS
刊名	PHYSICAL REVIEW D
	2019
卷号	99 期号:7 页码:76006
关键词	DYSON-SCHWINGER EQUATIONS PHASE-DIAGRAM QCD CONDENSATE
ISSN号	2470-0010
DOI	10.1103/PhysRevD.99.076006
英文摘要	In this paper, we study the pseudo-Wigner solution of the quark gap equation with a recently proposed algorithm in the framework of the (2 + 1)-flavor Nambu-Jona-Lasinio (NJL) model. We find that for the current quark mass m(u,d) = 5.5 MeV and chemical potential mu < mu(TCP) = 272.5 MeV, the Nambu solution and the positive pseudo-Wigner solution obtained via this algorithm is consistent with the physical solution obtained with the iterative method. Furthermore, the algorithm we used can help to illustrate the evolution of the solutions of the gap equation from the chiral limit to nonchiral limit and gives a prediction where the crossover line is located in the phase diagram for mu < 272.5 MeV. In addition, we also study the chiral susceptibilities as well as the loss of solutions for different chemical potentials.
学科主题	Astronomy & Astrophysics ; Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/23453]
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.Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China 2.Nanjing Proton Source Res & Design Ctr, Nanjing 210093, Jiangsu, Peoples R China 3.[Li, Cheng-Ming 4.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China 5.Nanjing Univ Posts & Telecommun, Coll Sci, Nanjing 210023, Jiangsu, Peoples R China 6.Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Li, CM,Yin, PL,Zong, HS. New algorithm to study the pseudo-Wigner solution of the quark gap equation in the framework of the (2+1)-flavor NJL model[J]. PHYSICAL REVIEW D,2019,99(7):76006.
APA	Li, CM,Yin, PL,&Zong, HS.(2019).New algorithm to study the pseudo-Wigner solution of the quark gap equation in the framework of the (2+1)-flavor NJL model.PHYSICAL REVIEW D,99(7),76006.
MLA	Li, CM,et al."New algorithm to study the pseudo-Wigner solution of the quark gap equation in the framework of the (2+1)-flavor NJL model".PHYSICAL REVIEW D 99.7(2019):76006.