核子耦合参数对中子星中超子相的影响

Nuclear coupling parameters affect hyperon phase in the neutron star

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:

Hyperon emergence and the proportion of hyperon have significant influence on the properties of the neutron star, How the different nuclear interaction models affect the neutron star is an important physical problems. In terms of the relativistic mean field theory, selecting different nucleon coupling parameters of neutron stars to calculate the density of hyperons. And we will find that the different nucleon coupling parameters have different extent influence in hyperon emergence and the transition of neutron star to hyperon star. The interaction potential of sigma meson and omega meson potential have a significant influence, but the influence of rho meson potential is small. These results have important reference value in researching the massive neutron star.