利用相对论平均场理论并考虑重子八重态{n,p,Λ,∑-,∑0,∑+,Ξ-,Ξ0},计算研究了∑超子在饱和核物质中的势深度U(N)∑对前身中子星(PNS)转动惯量的影响.研究发现:当U(N)∑依次取吸引势-30 MeV、-20 MeV、-10 MeV和0 MeV时,前身中子星相应于最大质量的转动惯量分别增大0.44%、0.29%和0.08%;当U(N)∑依次取排斥势+10 MeV、+20 MeV和+30 MeV时,前身中子星相应于最大质量的转动惯量分别增大0.06%和0.10%.取吸引势时的U(N)∑对相应于最大质量的转动惯量的影响较之取排斥势时的U(N)∑对它的影响大数倍.%Within the framework of relativistic mean field theory for the baryon octet system {n, p, A, ∑-, ∑0, ∑+, Ξ-, Ξ0}, the influence of the potential depth U∑(N) of ∑ in nuclear matter on the moment of inertia of a proto neutron star is investigated. It is found that the effect of the attractive potential depth U∑(N) on the maximum mass of a proto neutron star is more than several dozen times larger than that of the repulsive one, and the effect of the attractive potential depth U∑(N) on the radius corresponding to the maximum mass is larger than that of the repulsive one. It is also found that the moment of inertia corresponding to the maximum mass increases, respectively, by 0.44％, 0.29％ and 0.08％ for U∑(N)=-30 MeV,-20 MeV, -10 MeV and 0 MeV, and increases by 0.06％ and 0.10％ for U∑(N)=+10 MeV, +20 MeV and +30 MeV. The effect of negative U∑(N) on the moment of inertia corresponding to the maximum mass is several times larger than that of positive one.
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