Susceptibilities and the critical band of crossover region in the QCD phase diagram

doi:10.1140/epjc/s10052-019-6915-0

ITP OpenIR > SCI期刊论文

	Xu, SS ; Yin, PL ; Zong, HS
	Susceptibilities and the critical band of crossover region in the QCD phase diagram
Source Publication	EUROPEAN PHYSICAL JOURNAL C
Language	英语
Keyword	DYSON-SCHWINGER EQUATIONS RENORMALIZATION-GROUP MODEL
Abstract	The 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
ISSN	1434-6044
Volume	79 Issue:5 Pages:399
Subject Area	Physics
MOST Discipline Catalogue	Physics, Particles & Fields
DOI	10.1140/epjc/s10052-019-6915-0
Indexed By	SCIE
Citation statistics
Document Type	期刊论文
Identifier	http://ir.itp.ac.cn/handle/311006/23435
Collection	SCI期刊论文
Affiliation	1.[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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