A Model Study of Equation of State of QCD at Finite Chemical Potential and Zero Temperature
文献类型：期刊论文
| 作者 | Zong Hong-Shi; Hou Feng-Yao ; Jiang Yu; Sun Wei-Min; Hou, FY , Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China
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| 刊名 | COMMUNICATIONS IN THEORETICAL PHYSICS
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| 出版日期 | 2009 |
| 卷号 | 51期号:3页码:499-505 |
| 关键词 | Chiral-symmetry Restoration Dyson-schwinger Equations Decay Constant Compact Stars Self-energy Transition Breaking Physics Matter |
| ISSN号 | 0253-6102 |
| 英文摘要 | In this paper, we give a direct method for calculating the partition function, and hence the equation of state (EOS) of QCD at finite chemical potential and zero temperature. In the EOS derived in this paper the pressure density is the sum of two terms: the first term P(mu)vertical bar(mu=0) (the pressure density at mu = 0) is a mu-independent constant; the second term, which is totally determined by G[mu](p) (the dressed quark propagator at finite mu), contains all the nontrivial mu-dependence. By applying a general result in the rainbow-ladder approximation of the Dyson-Schwiner approach obtained in our previous study [Phys. Rev. C 71 (2005) 015205], G[mu](p) is calculated from the meromorphic quark propagator proposed in [Phys. Rev. D 67 (2003) 054019]. From this the full analytic expression of the EOS of QCD at finite mu and zero T is obtained (apart from the constant term P(mu)vertical bar(mu=0), which can be principle be calculated from the CJT effective action). A comparison between our EOS and the cold, perturbative EOS of QCD of Fraga, Pisarski and Schaffner-Bielich is made. It is expected that our EOS can provide a possible new approach for the study of neutron stars. |
| 学科主题 | Physics |
| WOS记录号 | WOS:000264755300022 |
| 公开日期 | 2012-08-02 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/5369]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Hou, FY , Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zong Hong-Shi,Hou Feng-Yao,Jiang Yu,et al. A Model Study of Equation of State of QCD at Finite Chemical Potential and Zero Temperature[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2009,51(3):499-505. |
| APA | Zong Hong-Shi,Hou Feng-Yao,Jiang Yu,Sun Wei-Min,&Hou, FY , Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China.(2009).A Model Study of Equation of State of QCD at Finite Chemical Potential and Zero Temperature.COMMUNICATIONS IN THEORETICAL PHYSICS,51(3),499-505. |
| MLA | Zong Hong-Shi,et al."A Model Study of Equation of State of QCD at Finite Chemical Potential and Zero Temperature".COMMUNICATIONS IN THEORETICAL PHYSICS 51.3(2009):499-505. |
入库方式： OAI收割
来源：理论物理研究所
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