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Chin. Phys. B, 2012, Vol. 21(8): 089701    DOI: 10.1088/1674-1056/21/8/089701
GEOPHYSICS, ASTRONOMY, AND ASTROPHYSICS Prev  

A set of new nucleon coupling constants and the proto neutron star matter

Zhao Xian-Feng, Jia Huan-Yu
a College of Mechanical and Electronic Engineering, Chuzhou University, Chuzhou 239000, China;
b Institute for Modern Physics, Southwest Jiaotong University, Chengdu 610031, China
Abstract  Using a new set of nucleon coupling constants CZ11 the properties of a proto neutron star is examined within the framework of the relativistic mean-field theory for the baryon octet system. It is found that the relative number density of Λ, Ξ-, and Ξ0 for CZ11 are all smaller than those for GL97 and either for CZ11 or for GL97, Σ-, Σ0, and Σ+ all do not appear. It is also found that the pressure and the maximum mass for CZ11 are all smaller than those for GL97. The maximum mass for CZ11 decreases by approximate 9 percent compared with that for GL97.
Keywords:  nucleon coupling constants      relativistic mean-field theory      proto neutron star     
Received:  02 February 2012      Published:  01 July 2012
PACS:  97.60.Jd (Neutron stars)  
  26.60.Kp (Equations of state of neutron-star matter)  
  21.65.Mn (Equations of state of nuclear matter)  
Fund: Project supported by the Natural Science Foundation of Anhui Province of China (Grant No. 1208085MA09), the Science Research Program of Institutions of Higher Education of Anhui Province of China (Grant No. KJ2012Z297), and the Fundamental Research Funds for the Central Universities (Grant No. SWJTU12ZT11).
Corresponding Authors:  Zhao Xian-Feng     E-mail:  zhaopioneer.student@sina.com

Cite this article: 

Zhao Xian-Feng, Jia Huan-Yu A set of new nucleon coupling constants and the proto neutron star matter 2012 Chin. Phys. B 21 089701

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