Discussion of thermodynamic features within the PNJL model

doi:10.1088/1674-1137/42/12/123105

ITP OpenIR > SCI期刊论文

	Zhang, JL ; Li, CM ; Zong, HS
	Discussion of thermodynamic features within the PNJL model
Source Publication	CHINESE PHYSICS C
Language	英语
Keyword	CHIRAL PHASE-TRANSITION QUARK QCD SUSCEPTIBILITIES EQUATION
Abstract	We discuss some thermodynamical features of a QCD system within the two-flavor Polyakov loop extended Nambu-Jona-Lasinio (PNJL) model. Several thermodynamical quantities of interest (pressure, energy density, specific heat, speed of sound, etc.) are investigated and discussed in detail with two different forms of Polyakov loop potential. The effective coupling strength G incorporating a quark feedback (quark condensate) through operator product expansion is also discussed, as well as the relationship between color deconfinement and chiral phase crossover. We find that some thermodynamical quantities have quite different behavior for different Polyakov loop potentials. By changing the characteristic temperature T-0 of the pure Yang-Mills field, we find that when T-0 becomes small, color deconfinement might happen earlier than chiral phase crossover, while their relationship can be determined via some thermodynamical quantities. Furthermore, the behavior of the thermodynamical quantities is quite different in the two different forms of Polyakov loop potential studied. Especially, one of the potentials, specific heat, has two peaks, which correspond to color deconfinement and chiral phase crossover respectively. This interesting phenomenon may shed some light on whether the inflection points of the chiral condensate and deconfinement transitions happen at the same temperature or not for lattice QCD and experimental studies.
	2018
ISSN	1674-1137
Volume	42 Issue:12 Pages:123105
Subject Area	Physics
MOST Discipline Catalogue	Physics, Nuclear ; Physics, Particles & Fields
DOI	10.1088/1674-1137/42/12/123105
Indexed By	SCIE
Citation statistics
Document Type	期刊论文
Identifier	http://ir.itp.ac.cn/handle/311006/22773
Collection	SCI期刊论文
Affiliation	1.[Zhang, Jin-Li 2.Li, Cheng-Ming 3.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China 4.Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China 5.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
Recommended Citation GB/T 7714	Zhang, JL,Li, CM,Zong, HS. Discussion of thermodynamic features within the PNJL model[J]. CHINESE PHYSICS C,2018,42(12):123105.
APA	Zhang, JL,Li, CM,&Zong, HS.(2018).Discussion of thermodynamic features within the PNJL model.CHINESE PHYSICS C,42(12),123105.
MLA	Zhang, JL,et al."Discussion of thermodynamic features within the PNJL model".CHINESE PHYSICS C 42.12(2018):123105.

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