Vacuum fluctuation effects on hyperonic neutron star matter

被引：0
|
作者：
Weng Ming-Hua [1 ,2 ]
Guo Xin-Heng [2 ]
Liu Bo [3 ]
机构：
[1] Minjiang Univ, Dept Phys & Elect Informat Engn, Fuzhou 350108, Peoples R China
[2] Beijing Normal Univ, Coll Nucl Sci & Technol, Beijing 100875, Peoples R China
[3] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
来源：
CHINESE PHYSICS C | 2013年 / 37卷 / 12期
基金：
中国国家自然科学基金;
关键词：
equations of state of the neutron star matter; hyperons; EFFECTIVE-FIELD THEORY; NUCLEAR-MATTER; 2-LOOP CORRECTIONS; WALECKA MODEL; QUANTUM HADRODYNAMICS; DIRAC SEA; ENERGY; HYPERNUCLEI; DYNAMICS; LAMBDA;
D O I：
10.1088/1674-1137/37/12/125101
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The vacuum fluctuation (VF) effects on the properties of the hyperonic neutron star matter are investigated in the framework of the relativistic mean field (RMF) theory. The VF corrections result in the density dependence of in-medium baryon and meson masses. We compare our results obtained by adopting three kinds of meson-hyperon couplings. The introduction of both hyperons and VF corrections softens the equation of state (EoS) for the hyperonic neutron star matter and hence reduces hyperonic neutron star masses. The presence of the 5 field enlarges the masses and radii of hyperonic neutron stars. Taking into account the uncertainty of meson-hyperon couplings, the obtained maximum masses of hyperonic neutron stars are in the range of 1.33M(circle dot)-1.55M(circle dot)
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页数：9
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