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题名: A thermodynamically consistent quasi-particle model without density-dependent infinity of the vacuum zero-point energy
作者: Luo, LJ ;  Cao, J ;  Yan, Y ;  Sun, WM ;  Zong, HS
刊名: EUROPEAN PHYSICAL JOURNAL C
出版日期: 2013
卷号: 73, 期号:11, 页码:2626
关键词: QUARK-GLUON PLASMA ;  EQUATION-OF-STATE ;  LATTICE QCD ;  TEMPERATURE ;  FERMIONS ;  STARS
学科分类: Physics
通讯作者: Luo, LJ (reprint author), Nanjing Univ, Inst Acoust, Key Lab Modern Acoust, MOE, Nanjing 210093, Jiangsu, Peoples R China.
部门归属: [Luo, Liu-jun] Nanjing Univ, Inst Acoust, Key Lab Modern Acoust, MOE, Nanjing 210093, Jiangsu, Peoples R China; [Luo, Liu-jun; Cao, Jing; Yan, Yan; Sun, Wei-min; Zong, Hong-shi] Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China; [Sun, Wei-min; Zong, Hong-shi] Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China; [Sun, Wei-min; Zong, Hong-shi] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
英文摘要: In this paper, we generalize the improved quasi-particle model proposed in Cao et al. (Phys. Lett. B 711:65, 2012) from finite temperature and zero chemical potential to the case of finite chemical potential and zero temperature, and calculate the equation of state (EOS) for (2 + 1) flavor Quantum Chromodynamics (QCD) at zero temperature and high density. We first calculate the partition function at finite temperature and chemical potential, then go to the limit T = 0 and obtain the equation of state (EOS) for cold and dense QCD, which is important for the study of neutron stars. Furthermore, we use this EOS to calculate the quark-number density, the energy density, the quark-number susceptibility and the speed of sound at zero temperature and finite chemical potential and compare our results with the corresponding ones in the existing literature.
资助者: National Natural Science Foundation of China [11275097, 10935001, 11274166, 11075075]; National Basic Research Program of China [2012CB921504]; Research Fund for the Doctoral Program of Higher Education [2012009111002]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000327098000001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15242
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Recommended Citation:
Luo, LJ,Cao, J,Yan, Y,et al. A thermodynamically consistent quasi-particle model without density-dependent infinity of the vacuum zero-point energy[J]. EUROPEAN PHYSICAL JOURNAL C,2013,73(11):2626.
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