Title: Effect of Hyperon Isospin Interaction on the Transition Density of Hyperon Stars
Abstract: 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,Λ,Σ-,Σ0,Σ+,Ξ-,Ξ0} system.The results show that,considering the hyperon isospin interaction,the transition density of hyperon stars gradually decreased when xρΣ=2,1,2/3.When baryonic density was the transition density of hyperon stars,the Λ and Ξ-hyperons make the most contribution to the transition density of hyperon stars,Λ and Ξ-hyperon populations nearly amount to 80% of the total hyperon populations,the particle populations of Ξ-decreased as xρΣ reduced,Λ hyperon populations were 34.2%,35.8% and 33.8% of the total hyperon populations as xρΣ=2,1,2/3,respectively.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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