夸克物质对称能与夸克星潮汐形变的研究  

On the Study of Symmetry Energy of Quark Matter and Tidal Deformability of Quark Stars

作　　者：徐建峰 崔磊[1] 夏铖君 陆振烟 XU Jianfeng;CUI Lei;XIA Chengjun;LU Zhenyan(School of Arts and Sciences,Suqian University,Suqian 223800,Jiangsu,China;Center for Gravitation and cosmology,College of physical science and Technology,Yangzhou University,Yangzhou 225009,Jiangsu,China;School of Physics and Electronics,Hunan University of Science and Technology,Xiangtan 411201,Hunan,China)

机构地区：[1]宿迁学院文理学院,江苏宿迁223800 [2]扬州大学引力与宇宙学研究中心物理科学与技术学院,江苏扬州225009 [3]湖南科技大学物理与电子科学学院,湖南湘潭411201

出　　处：《原子核物理评论》2024年第1期325-330,共6页Nuclear Physics Review

基　　金：国家自然科学基金资助项目(12005005,12205093,12275234,11875052);国家平方公里阵列项目(2020SKA0120300);湖南省自然科学基金(2021JJ40188);宿迁学院人才引进科研启动基金(Xiao2022XRC061);宿迁市高性能复合材料重点实验室(M202109);宿迁学院多功能材料研发平台(2021pt04)。

摘　　要：近十年的研究表明,夸克物质对称能对夸克物质的状态方程有重要影响。在本研究中,通过采用等效质量模型并在夸克质量标度中引入同位旋依赖项来研究夸克物质的稳定窗口。研究结果表明,足够大的同位旋强度依赖参数C_I可以显著地增大奇异夸克物质的稳定窗口,从而使计算结果可以同时满足天文观测数据PSR J1614-2230具有1.928±0.017倍太阳质量和双中子星并合事件GW170817中得到的潮汐形变70≤A_(1.4)≤580的约束。与奇异夸克物质的情况相反,u-d夸克物质的稳定窗口会随着同位旋强度依赖参数的增大而减小,从而使u-d夸克星无法支持相应的天文观测数据。最后,发现奇异夸克物质的对称能远大于u-d夸克物质的对称能,并且夸克间的单胶子交换相互作用会导致奇异夸克物质的对称能变软。Research performed during the past decade revealed an important role of symmetry energy in the equation of state of quark matter.By introducing an isospin-dependent term into the quark mass scaling,the stability window of quark matter was studied in the equivparticle model.The results show that a sufficiently strong isospin dependence C,can significantly widen the absolute stable region of strange quark matter,yielding results that simultaneously satisfy the constraints of the astrophysical observations of PSR J1614-2230 with(1.928±0.017)Mo and tidal deformability 70≤A1.4≤580 measured in the event GW170817.Contrary to the case of strange quark matter,the stable region of u-d quark matter narrows with isospin dependence Cr,leading to inconsistency with astrophysical observations.Finally,we found that the symmetry energy of strange quark matter is much larger than that of u-d quark matter,and one-gluon exchange interaction between quarks causes the symmetry energy of strange quark matter to become softer.

关 键 词：对称能 夸克物质 夸克星 潮汐形变 稳定窗口 

分 类 号：O572[理学—粒子物理与原子核物理]