Annals of Physics ( IF 3.0 ) Pub Date : 2021-05-01 , DOI: 10.1016/j.aop.2021.168489 M. Dadkhah , A. Tafrihi
The lowest order constrained variational () method is used for the finite matter in the periodic boxes (). Using the cluster expansion of the energy, the symmetric nuclear (pure neutron) matter energies for the different number of nucleons are found at the three-body cluster level. In these computations, the Bethe homework, as well as the central part of the () potentials, are employed. Considering the three-body cluster energy, the energies become consistent with those of Fermi chain (). By increasing the number of nucleons, the symmetric nuclear (pure neutron) matter three-body cluster energy becomes almost constant (changes at most 15%). It is demonstrated that including the Bethe homework interaction, the ratio of the three-body cluster energy to that of two-body () is less than 0.17. The corresponding for the potential is about 1 (1.9), at low (high) densities. As a result, the approximation of the formalism is valid for the pure neutron matter with the Bethe homework potential. Employing the interaction in the calculations, the normalization constraint probably needs to be extended to the three-body cluster term to improve the approximation.
中文翻译:
这 有限 周期盒中的物质三体簇能量
最低阶约束变分()方法用于有限 定期框中的物质()。利用能量的簇扩展,在三体团簇水平上发现了不同数量核子的对称核(纯中子)物质能量。在这些计算中,Bethe作业以及 ()的潜力。考虑到三体团簇能量, 能量变得与 费米 链 ()。通过增加核子数量,对称核(纯中子)物质的三体簇能量几乎恒定(变化最多15%)。结果表明,包括Bethe家庭作业互动在内,三体簇能量与两体簇能量之比()小于0.17。相应的 为了 低(高)密度时电势约为1(1.9)。结果,形式主义对于具有Bethe家庭作业潜能的纯中子物质是有效的。用人 互动 计算, 归一化约束可能需要扩展到三体聚类项以改善 近似。