核子耦合参数对中子星中超子相的影响

发布时间：2018-03-17 11:54

本文选题：中子星　切入点：超子　出处：《四川大学学报(自然科学版)》2016年01期 　论文类型：期刊论文

【摘要】：中子星中超子的出现以及超子的比例对中子星的性质具有重要影响,不同的核子相互作用模型如何影响中子星中的超子是一个重要物理问题.从相对论平均场理论出发,选取不同核子耦合参数,计算了中子星中超子的数密度,发现不同类核子耦合参数对中子星中超子出现和中子星向超子星转变的转变密度有不同影响,而且核子相互作用的σ介子势和ω介子势影响显著,而ρ介子势影响较小.这些结果对大质量中子星性质的理论研究具有重要参考价值.
[Abstract]:The appearance of hyperons and the proportion of hyperons in neutron stars have an important influence on the properties of neutron stars. How different nuclear interaction models affect the hyperons in neutron stars is an important physical problem. Different nucleon coupling parameters are selected to calculate the number density of hyperons in neutron stars. It is found that different nucleon coupling parameters have different effects on the occurrence of hyperons and the transition densities from neutron stars to superstars. Moreover, the 蟽 meson potential and 蠅 meson potential of nucleon interaction have significant influence, but 蟻 meson potential has little effect. These results have important reference value for the theoretical study of the properties of large mass neutron stars.
【作者单位】：西南交通大学现代物理研究所;
【基金】：国家自然科学基金(11175147)
【分类号】：P145.6

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