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Zhang, JL; Li, CM; Zong, HS
Discussion of thermodynamic features within the PNJL model
发表期刊CHINESE PHYSICS C
语种英语
关键词CHIRAL PHASE-TRANSITION QUARK QCD SUSCEPTIBILITIES EQUATION
摘要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
ISSN1674-1137
卷号42期号:12页码:123105
学科领域Physics
学科门类Physics, Nuclear ; Physics, Particles & Fields
DOI10.1088/1674-1137/42/12/123105
收录类别SCIE
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/22773
专题理论物理所科研产出_SCI论文
作者单位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
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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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