Discussion of thermodynamic features within the PNJL model
文献类型：期刊论文
| 作者 | Zhang, JL; Li, CM; Zong, HS |
| 刊名 | CHINESE PHYSICS C
 |
| 出版日期 | 2018 |
| 卷号 | 42期号:12页码:123105 |
| 关键词 | CHIRAL PHASE-TRANSITION QUARK QCD SUSCEPTIBILITIES EQUATION |
| ISSN号 | 1674-1137 |
| DOI | 10.1088/1674-1137/42/12/123105 |
| 英文摘要 | 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. |
| 学科主题 | Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/22773]  |
| 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.Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China 2.[Zhang, Jin-Li 3.Li, Cheng-Ming 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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：理论物理研究所
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