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Isovector scalar field effects in asymmetric nuclear matter
刘波(理); Liu, B; Shen, CW; Di Toro, M; Zhao, EG
2008
发表期刊COMMUNICATIONS IN THEORETICAL PHYSICS
卷号49期号:1页码:#REF!
通讯作者Liu, B (reprint author), Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China.
文章类型Article
摘要Density-dependent parametrization models of the nucleon-meson coupling constants, including the isovector scalar delta-field, are applied to asymmetric nuclear matter. The nuclear equation of state (EOS) and the neutron star properties are studied in a relativistic Lagrangian density, using the relativistic mean field (RMF) hadron theory. It is known that the delta-fleld in the constant coupling scheme leads to a larger repulsion in dense neutron-rich matter and to a definite splitting of proton and neutron effective masses, finally influences the stability of the neutron stars. We use density-dependent models of the nucleon-meson couplings to study the properties of neutron star matter and to reexamine the delta-held effects in asymmetric nuclear matter. Our calculation shows that the stability conditions of the neutron star matter can be improved in presence of the delta-meson in the density-dependent models of the coupling constants. The EOS of nuclear matter strongly depends on the density dependence of the interactions.
关键词density-dependent relativistic hadron field theory nuclear matter equation of state neutron stars
学科领域Physics
收录类别SCI
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000252640100041
引用统计
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/226882
专题理论物理室
推荐引用方式
GB/T 7714
Liu B,Liu, B,Shen, CW,et al. Isovector scalar field effects in asymmetric nuclear matter[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2008,49(1):#REF!.
APA 刘波,Liu, B,Shen, CW,Di Toro, M,&Zhao, EG.(2008).Isovector scalar field effects in asymmetric nuclear matter.COMMUNICATIONS IN THEORETICAL PHYSICS,49(1),#REF!.
MLA 刘波,et al."Isovector scalar field effects in asymmetric nuclear matter".COMMUNICATIONS IN THEORETICAL PHYSICS 49.1(2008):#REF!.
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