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Xu, SS; Yin, PL; Zong, HS
Susceptibilities and the critical band of crossover region in the QCD phase diagram
Source PublicationEUROPEAN PHYSICAL JOURNAL C
Language英语
KeywordDYSON-SCHWINGER EQUATIONS RENORMALIZATION-GROUP MODEL
AbstractThe quark condensate and quark number density are commonly used to determine the QCD phase transition. However, the usually defined quark condensate is divergent in the case of non-chiral limit, and the quark number density suffers from the superficial divergence in numerical calculation. In order to address these issues, we redefine the quark condensate at finite temperature and density and propose a technique to deal with the divergence of the quark condensate and the superficial divergence of the quark number density in numerical calculations. Based on these improvements, we further discuss various susceptibilities as criteria to determine the critical points in the phase transition. It is found that different susceptibilities give different locations of the critical points in the crossover region, which suggests us to define a critical band, instead of some exclusive line in the phase diagram.
2019
ISSN1434-6044
Volume79Issue:5Pages:399
Subject AreaPhysics
MOST Discipline CataloguePhysics, Particles & Fields
DOI10.1140/epjc/s10052-019-6915-0
Indexed BySCIE
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/23435
CollectionSCI期刊论文
Affiliation1.[Xu, Shu-Sheng
2.Nanjing Univ Posts & Telecommun NJUPT, New Energy Technol Engn Lab Jiangsu Prov, Nanjing 210023, Jiangsu, Peoples R China
3.Nanjing Univ Posts & Telecommun NJUPT, Sch Sci, Nanjing 210023, Jiangsu, Peoples R China
4.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China
5.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
6.Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Xu, SS,Yin, PL,Zong, HS. Susceptibilities and the critical band of crossover region in the QCD phase diagram[J]. EUROPEAN PHYSICAL JOURNAL C,2019,79(5):399.
APA Xu, SS,Yin, PL,&Zong, HS.(2019).Susceptibilities and the critical band of crossover region in the QCD phase diagram.EUROPEAN PHYSICAL JOURNAL C,79(5),399.
MLA Xu, SS,et al."Susceptibilities and the critical band of crossover region in the QCD phase diagram".EUROPEAN PHYSICAL JOURNAL C 79.5(2019):399.
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