论文标题
Hartree-Bogoliubov方法的相对论能量密度功能的优化点耦合相互作用量化了核批量特性
The optimized point-coupling interaction for the relativistic energy density functional of Hartree-Bogoliubov approach quantifying the nuclear bulk properties
论文作者
论文摘要
我们为相对论的Hartree-Bogoliubov框架提出了新优化的非线性点耦合参数相互作用PC-L3R，并通过拟合可观察到的可观察力，即91个球形核，与63个核与12个necle组成的radii和12 nece cons Oncops Oncy Onsevience和12 necy Onsemia和12 nece cons的结合能，并具有进一步优化的可分离配对力。质子和中子的可分离配对力强度与点耦合常数一起优化，并以令人满意的再现经验配对间隙而被证明是合理的。在AME2020中针对91个核与当前和其他常用的点耦合相互作用产生的实验结合能的比较表明，在相对论Hartree-Bogoliubov中实施PC-L3R会产生最低的根平方偏差。电荷半径令人满意地与实验一致。同时，PC-L3R能够估计对称核物质的饱和特性，并适当预测结合能的同胞素和质量依赖性。单核分离能的实验性奇数差异很高。还提出了基于PC-L3R和其他点耦合相互作用的7,373个核的估计结合能的比较。
We propose a newly optimized nonlinear point-coupling parameterized interaction, PC-L3R, for the relativistic Hartree-Bogoliubov framework with a further optimized separable pairing force by fitting to observables, i.e., the binding energies of 91 spherical nuclei, charge radii of 63 nuclei, and 12 sets of mean pairing gaps consisting of 54 nuclei in total. The separable pairing force strengths of proton and neutron are optimized together with the point-coupling constants, and are justified in satisfactory reproducing the empirical pairing gaps. The comparison of experimental binding energies compiled in AME2020 for 91 nuclei with the ones generated from the present and other commonly used point-coupling interactions indicates that the implementation of PC-L3R in relativistic Hartree-Bogoliubov yields the lowest root-mean-square deviation. The charge radii satisfactory agree with experiment. Meanwhile, PC-L3R is capable of estimating the saturation properties of the symmetric nuclear matter and of appropriately predicting the isospin and mass dependence of binding energy. The experimental odd-even staggering of single nucleon separation energies is well reproduced. The comparison of the estimated binding energies for 7,373 nuclei based on the PC-L3R and other point-coupling interactions is also presented.
