We examine the effect of adding mesons fo(975) and Ф(1020) as well as the variety of UΞ^(N) (the potential well depth ofΞ in nuclear matter) from -10 MeV to -28 MeV on the extent of the particles participation and ...We examine the effect of adding mesons fo(975) and Ф(1020) as well as the variety of UΞ^(N) (the potential well depth ofΞ in nuclear matter) from -10 MeV to -28 MeV on the extent of the particles participation and the properties of the neutron star in the relativistic mean field model. We find that considering the contribution of fo and Ф mesons, the equation of state of the neutron star turns soft, the maximum mass reduces while the corresponding radius increases. Ξ- hyperons appear at lower density as UΞ^(N) becomes deeper, and the variety of UΞ^(N) has little effect on the equation of state and the properties of the neutron star.展开更多
基金The project supported in part by the Postdoctoral Science Foundation of China under Grant No.2002032169+2 种基金
National Natural Science Foundation of China under Grant No.10275037
the Foundation for Doctorate Training Program of China under Grant No.2001005
文摘We examine the effect of adding mesons fo(975) and Ф(1020) as well as the variety of UΞ^(N) (the potential well depth ofΞ in nuclear matter) from -10 MeV to -28 MeV on the extent of the particles participation and the properties of the neutron star in the relativistic mean field model. We find that considering the contribution of fo and Ф mesons, the equation of state of the neutron star turns soft, the maximum mass reduces while the corresponding radius increases. Ξ- hyperons appear at lower density as UΞ^(N) becomes deeper, and the variety of UΞ^(N) has little effect on the equation of state and the properties of the neutron star.
