Revisiting Effects of Hyperonization and Core-crust Transition on Tidal Deformability of Neutron Stars  

重论超子化与芯冠转变对中子星潮汐形变的效应

作　　者：LI Niu YE Jing WEI Sina YANG Rongyao JIANG Weizhou 李牛;叶婧;韦斯纳;杨荣瑶;蒋维洲(东南大学物理学院,南京211189)

机构地区：[1]School of Physics,Southeast University,Nanjing 211189,China

出　　处：《原子核物理评论》2024年第3期858-862,共5页Nuclear Physics Review

基　　金：国家自然科学基金资助项目(11775049,12375112)。

摘　　要：Neutron star tidal deformability extracted from gravitational wave data provides a novel probe to the neutron star structures that encode the information of the nuclear equation of state(EOS).In this contribution to QCS2023 special issue,attention is paid to the role of the hyperon compositions and core-crust transition in the tidal deformability in a relativistic mean-field approach with the density-dependent parametrizations.Since both the corecrust transition density and the hyperon compositions involve large uncertainties in neutron stars,it is demonstrated that various core-crust transition density and hyperon compositions allowed by the parametrization can both have significant effects on the tidal deformability of neutron stars.These results are instructive for further experimental and theoretical works.从引力波数据提取的中子星潮汐形变为包含核态方程信息的中子星结构提供了新颖的探针。利用相对论平均场密度依赖的参数,在这篇QCS2023专刊文章中,重点关注中子星的超子组份与芯冠转变对潮汐形变的作用。鉴于两者都存在大的不确定度,阐明了变化参数化模型所许可的芯冠转变密度与超子组份两者都可以对中子星潮汐形变有显著的效应。这些结果对进一步的实验与理论工作具有一定的启示作用。

关 键 词：core-crust transition hyperons neutron star tidal deformability relativistic mean-field models 

分 类 号：O572.21[理学—粒子物理与原子核物理]