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2+1 flavors QCD equation of state at zero temperature within Dyson-Schwinger equations
Xu, Shu-Sheng1,3; Yan, Yan1; Cui, Zhu-Fang1,3; Zong, Hong-Shi1,2,3
2015-12-30
发表期刊INTERNATIONAL JOURNAL OF MODERN PHYSICS A
卷号30期号:36
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.
文章类型Article
关键词Equation Of State Quark Number Density Dyson-schwinger Equations
WOS标题词Science & Technology ; Physical Sciences
DOI10.1142/S0217751X15502176
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
语种英语
项目资助者National Natural Science Foutidation of China(11275097 ; Jiangsu Planned Projects for Postdoctoral Research Funds(1402006C) ; China Postdoctoral Science Foundation(2015M581766) ; 11475085 ; 11535005)
WOS研究方向Physics
WOS类目Physics, Nuclear ; Physics, Particles & Fields
WOS记录号WOS:000367524800004
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文献类型期刊论文
条目标识符http://libir.pmo.ac.cn/handle/332002/16099
专题南极天文中心
作者单位1.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China
2.Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China
3.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
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GB/T 7714
Xu, Shu-Sheng,Yan, Yan,Cui, Zhu-Fang,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).
APA Xu, Shu-Sheng,Yan, Yan,Cui, Zhu-Fang,&Zong, Hong-Shi.(2015).2+1 flavors QCD equation of state at zero temperature within Dyson-Schwinger equations.INTERNATIONAL JOURNAL OF MODERN PHYSICS A,30(36).
MLA Xu, Shu-Sheng,et al."2+1 flavors QCD equation of state at zero temperature within Dyson-Schwinger equations".INTERNATIONAL JOURNAL OF MODERN PHYSICS A 30.36(2015).
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