arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2009.10690nucl-thastro-ph.HE
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BigApple力及其对有限核和天体物理的意义

BigApple force and its implications to finite nuclei and astrophysical objects

H. C. Das, Ankit Kumar, Bharat Kumar, S. K. Biswal, S. K. Patra

摘要:

GW 190814事件的次级成分给我们留下了一个问题,“它是超大质量的中子星还是最轻的黑洞?".最近Fattoyev等人得到了一个名为BigApple的能量密度泛函(EDF),它再现了中子星的质量为2.60 $M_\odot$,这与GW 190814的数据是一致的。本研究探讨有限核,核物质,和中子星的性质,通过使用大苹果EDF随着四个著名的相对论平均场力,即NL 3,G3,IOPB-I,和FSU石榴石。有限核的性质,如每个粒子的结合能,皮肤厚度,电荷半径,单粒子能量,和两个中子的分离能是很好的预测由大苹果为一系列的核。计算得到的核物质的不可压缩性、对称能和饱和密度下的斜率参数等物理量与已有的经验值或实验值一致。由BigApple参数集预测的规范潮汐变形能力与GW 190814数据匹配良好。此外,无量纲转动惯量在PSR J 0737 - 3039 A分析给出的范围内。

英文摘要:

The secondary component of the GW190814 event left us with a question, "whether it is a supermassive neutron star or lightest black-hole?". Recently, Fattoyev et al. have obtained an energy density functional (EDF) named as BigApple, which reproduces the mass of the neutron star is 2.60 $M_\odot$ which is well consistent with GW190814 data. This study explores the properties of finite nuclei, nuclear matter, and neutron stars by using the BigApple EDF along with four well-known relativistic mean-field forces, namely NL3, G3, IOPB-I, and FSUGarnet. The finite nuclei properties like binding energy per particle, skin thickness, charge radius, single-particle energy, and two-neutron separation energy are well predicted by the BigApple for a series of nuclei. The calculated nuclear matter quantities such as incompressibility, symmetry energy, and slope parameters at saturation density are consistent with the empirical or experimental values where ever available. The predicted canonical tidal deformability by the BigApple parameter set is well-matched with the GW190814 data. Also, the dimensionless moment of inertia lies in the range given by the analysis of PSR J0737-3039A.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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