Nuclear coupling parameters affect hyperon phase in the neutron star

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.

Key words:Neutron star; Hyperon; Relativistic mean field theory;