奇异介子对前身中子星转动惯量的影响(英文)  

Effect of strange mesons on the moment of inertia of proto neutron star

作　　者：赵先锋[1] 张华[2] 

机构地区：[1]滁州学院电子信息工程系,滁州239000 [2]北京应用物理与计算数学研究所,北京100089

出　　处：《四川大学学报（自然科学版）》2010年第4期825-830,共6页Journal of Sichuan University(Natural Science Edition)

基　　金：安徽省高校省级自然科学研究基金(KJ2009B106);滁州学院科研基金(2008kj019B);滁州学院博士科研启动基金

摘　　要：本文利用相对论平均场理论并考虑重子八重态{n,p,∧,∑^-,∑~0,∑^+,(?)^-,(?)~0},研究了σ~*,ψ介子对前身中子星转动惯量的影响.研究发现:考虑到σ~*,ψ介子的贡献,σ_0,ω_,ρ_0介子的势场强度以及中子电子的化学势都明显降低了.同时还发现,与不考虑σ~*,ψ介子的贡献时相比,前身中子星质量的最大值和转动惯量的最大值也都降低了,并且前者的减小量大于后者的减小量.Within the framework of relativistic mean field theory for the baryon octet {n,P,A,∑^-,∑^＋,Θ,Θ} system, the influence of σ and φ mesons on the moment of inertia of proto neutron star is investigated. It is found that considering the contribution of σ and φ mesons, the fields of σ0,ω0,ρ0 mesons, the chemical potentials of neutrons and electrons obviously decrease. It is also found that compared with those without considering the contribution of σ and φ mesons, the maximum value of mass and that of moment of inertia all decrease too and the reduce of the former is more than that of the latter.

关 键 词：转动惯量 前身中子星 相对论平均场理论 

分 类 号：O572.2[理学—粒子物理与原子核物理]