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题名: 2+1 flavors QCD equation of state at zero temperature within Dyson-Schwinger equations
作者: Xu, SS;  Yan, Y;  Cui, ZF;  Zong, HS
刊名: INTERNATIONAL JOURNAL OF MODERN PHYSICS A
出版日期: 2015
卷号: 30, 期号:36, 页码:1550217
关键词: Equation of state ;  quark number density ;  Dyson-Schwinger equations
学科分类: Physics
DOI: http://dx.doi.org/10.1142/S0217751X15502176
通讯作者: Xu, SS (reprint author), Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China.
文章类型: Article
英文摘要: Within the framework of Dyson-Schwinger equations (DSEs), we discuss the equation of state (EOS) and quark number densities of 2 + 1 flavors, that is to say, u, d, and a quarks. The chemical equilibrium and electric charge neutrality conditions are used to constrain the chemical potential of different quarks. The EOS in the cases of 2 flavors and 2 + 1 flavors are discussed, and the quark number densities, the pressure, and energy density per baryon are also studied. The results show that there is a critical chemical potential for each flavor of quark, at which the quark number density turns to nonzero from 0; and furthermore, the system with 2 + 1 flavors of quarks is more stable than that with 2 flavors in the system. These discussions may provide some useful in to some research fields, such as the studies related to the QCD phase transitions or compact stars.
类目[WOS]: Physics, Nuclear ;  Physics, Particles & Fields
关键词[WOS]: QUARK MATTER ;  SYMMETRY-BREAKING ;  PHASE-TRANSITION ;  WIGNER SOLUTION ;  POLYAKOV-LOOP ;  PNJL MODEL ;  NJL-MODEL ;  DENSITY ;  PHYSICS ;  STARS
收录类别: SCI
项目资助者: National Natural Science Foutidation of China [11275097, 11475085, 11535005] ;  Jiangsu Planned Projects for Postdoctoral Research Funds [1402006C] ;  China Postdoctoral Science Foundation [2015M581766]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/20734
Appears in Collections:理论物理所2015年知识产出_期刊论文

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Recommended Citation:
Xu, SS,Yan, Y,Cui, ZF,et al. 2+1 flavors QCD equation of state at zero temperature within Dyson-Schwinger equations[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A,2015,30(36):1550217.
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