Implications of neutron skin measurements on Skyrme equations of state  

作　　者：管大为 裴俊琛 蒋崇基 Da Wei Guan;Jun Chen Pei;Chong Ji Jiang(State Key Laboratory of Nuclear Physics and Technology,School of Physics,Peking University,Beijing 100871,China;Southern Center for Nuclear-Science Theory(SCNT),Institute of Modern Physics,Chinese Academy of Sciences,Huizhou 516000,China)

机构地区：[1]State Key Laboratory of Nuclear Physics and Technology,School of Physics,Peking University,Beijing 100871,China [2]Southern Center for Nuclear-Science Theory(SCNT),Institute of Modern Physics,Chinese Academy of Sciences,Huizhou 516000,China

出　　处：《Chinese Physics C》2024年第6期155-161,共7页中国物理C（英文版）

基　　金：Supported by the National Key R&D Program of China(G2023YFA1606403,2023YFE0101500);the National Natural Science Foundation of China(12335007,11961141003);the funding support from the State Key Laboratory of Nuclear Physics and Technology,Peking University(NPT2023ZX01)。

摘　　要：The recent measurements of neutron skins via parity violation in electron scattering have extracted an abnormally thick neutron skin for 208 Pb,which has significant consequences in nuclear equation of state(EoS)and neutron star observations.In this study,we perform optimizations of extended Skyrme forces in a consistent manner by including neutron skin thicknesses from PREX-Ⅱand CREX experiments and investigate nuclear EoSs and neutron stars in the GW170817 event By varying the fitting weights of neutron skins,several new Skyrme parameterizations are obtained.Our results show the competition in the fitting procedure to simultaneously describe neutron skins,other properties of finite nuclei,and neutron star observations.The prospects of resolving neutron skin issues are also discussed.

关 键 词：neutron skin equation of state neutron star Skyrme force 

分 类 号：O572.342[理学—粒子物理与原子核物理]