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	Hyperon coupling dependence of hadron matter properties in relativistic mean field model
	Mi, A. J. ; Zuo, W. ; Li, A. ; Li A(李昂)
	2007
关键词	hyperon coupling strange meson field equations of state
英文摘要	The properties of hadronic matter at beta equilibrium in a wide range of densities are described by appropriate equations of state in the framework of the relativistic mean field model. Strange meson fields, namely the scalar meson field sigma*(975) and the vector meson field sigma*(1020), are included in the present work. We discuss and compare the results of the equation of state, nucleon effective mass, and strangeness fraction obtained by adopting the TM1, TMA, and GL parameter sets for nuclear sector and three different choices for the hyperon couplings. We find that the parameter set TM1 favours the onset of hyperons most, while at high densities the GL parameter set leads to the most hyperon-rich matter. For a certain parameter set (e.g. TM1), the most hyperon-rich matter is obtained for the hyperon potential model. The influence of the hyperon couplings on the effective mass of nucleon, is much weaker than that on the nucleon parameter set. The nonstrange mesons dominate essentially the global properties of dense hyperon matter. The hyperon potential model predicts the lowest value of the neutron star maximum mass of about 1.45 M-sun to be 0.4-0.5 M-sun lower than the prediction by using the other choices for hyperon couplings.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/69570]
专题	物理技术－已发表论文
推荐引用方式 GB/T 7714	Mi, A. J.,Zuo, W.,Li, A.,et al. Hyperon coupling dependence of hadron matter properties in relativistic mean field model[J],2007.
APA	Mi, A. J.,Zuo, W.,Li, A.,&李昂.(2007).Hyperon coupling dependence of hadron matter properties in relativistic mean field model..
MLA	Mi, A. J.,et al."Hyperon coupling dependence of hadron matter properties in relativistic mean field model".(2007).

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