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arXiv 2203.05397nucl-thnucl-ex
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全Dirac空间相对论从头算理论中的非对称核物质和中子星性质

Asymmetric Nuclear Matter and Neutron Star Properties in Relativistic ab initio Theory in the Full Dirac Space

Sibo Wang, Hui Tong, Qiang Zhao, Chencan Wang, Peter Ring, Jie Meng

摘要:

通过求解全Dirac空间中的相对论Brueckner-Hartree-Fock方程,澄清了非对称核物质从头计算中关于有效Dirac质量与同位旋相关性的长期争论.在饱和密度下的对称能及其斜率参数分别为$E_{\text{sym}}(ρ_0)=33.1$ MeV和$L=65.2$ MeV,与经验值和实验值一致.进一步的应用预测了中子星半径$R_{1.4M_\odot}\approx 12$ km和中子星最大质量$M_{\text{max}}\leq 2.4M_\odot$。

英文摘要:

The long-standing controversy about the isospin dependence of the effective Dirac mass in ab initio calculations of asymmetric nuclear matter is clarified by solving the relativistic Brueckner-Hartree-Fock equations in the full Dirac space. The symmetry energy and its slope parameter at the saturation density are $E_{\text{sym}}(ρ_0)=33.1$ MeV and $L=65.2$ MeV, in agreement with empirical and experimental values. Further applications predict the neutron star radius $R_{1.4M_\odot}\approx 12$ km and the maximum mass of a neutron star $M_{\text{max}}\leq 2.4M_\odot$.

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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