摘要：
利用相对论平均场理论,考虑重子八重态{n,p,A,Σ-,∑0,Σ+,(≡)-,(≡)0},研究了超子同位旋相互作用对超子星转变密度的影响.结果表明:考虑超子同位旋相互作用,当xpΣ分别取2,1,2/3时,超子星的转变密度逐渐降低;当重子数密度取为超子星转变密度时,∧和(≡)-超子对超子星转变密度贡献最大,二者之和约占总超子数的80%;(≡)-超子的数量随xpΣ的减小而降低,Λ超子的数量分别占总超子数的34.2%,35.8%和33.8%.%The effect of hyperon isospin interaction on the transition density of hyperon stars was studied by means of relativistic mean field theory for the baryon octet { n ,p ,A ,∑- ,∑0 ,∑+ ,≡- ,≡0 } system. The results show that, considering the hyperon isospin interaction, the transition density of hyperon stars gradually decreased when xp∑ = 2,1,2/3. When baryonic density was the transition density of hyperon stars, the A and ≡- hyperons make the most contribution to the transition density of hyperon stars, A and ≡- hyperon populations nearly amount to 80％ of the total hyperon populations, the particle populations of ≡- decreased as xp∑ reduced, A hyperon populations were 34.2％ ,35.8％ and 33.8％ of the total hyperon populations as xp∑＝ 2,1,2/3, respectively.
