Proton fraction in hot neutron star matter with a chiral hadronic model

被引：2
|
作者：
Guo, H [1 ]
Zhou, R
Liu, YX
机构：
[1] Peking Univ, Dept Tech Phys, Beijing 100871, Peoples R China
[2] Peking Univ, MOE, Lab Heavy Ion Phys, Beijing 100871, Peoples R China
[3] Peking Univ, Dept Phys, Beijing 100871, Peoples R China
[4] Natl Lab heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China
[5] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2002年 / 19卷 / 10期
关键词：
D O I：
10.1088/0256-307X/19/10/311
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In the framework of a chiral hadronic model it has been numerically proven that the parabolic expansion with respect to delta(2) at finite density and temperature is a good approximation in the relativistic mean field theory. It is also shown that the proton fraction in the modified Urca process is considerably restrained in comparison with that of the direct Urca process. Then, we discuss the influences of the density-dependent and temperature-dependent asymmetry energy on the proton fraction in hot neutron star matter.
引用
收藏
页码：1432 / 1435
页数：4
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