论文标题
基态密度和40CA，48CA和208pb的总结合能的基态相关性
Ground state correlations on ground state densities and total binding energies of 40Ca, 48Ca and 208Pb
论文作者
论文摘要
基于SAMI，SAMI-J27和SAMI-T能量密度函数（EDFS）的Hartree-Fock模型（EDFS）研究了双关闭壳核40CA，48CA和208pb的中子和质子密度。等速器和异载体声子诱导的基态相关性（GSC）也通过二阶扰动理论进行评估，并具有自洽随机相位近似（RPA）。我们发现，与实验数据一致，GSC降低了基态密度的内部部分。另一方面，GSC增强了中子皮肤厚度为48CA和208pb。 GSC对总结合能的影响还通过准玻色子近似来评估。张量相互作用的效果在密度分布和结合能上都很小。
Neutron and proton densities of doubly-closed shell nuclei 40Ca, 48Ca and 208Pb are studied based on a Hartree-Fock model with SAMi, SAMi-J27 and SAMi-T energy density functionals (EDFs). The ground state correlations (GSC) induced by isoscalar and isovector phonons are also evaluated by the second order perturbation theory with a self-consistent random phase approximation (RPA). We found that the interior part of the ground state densities is reduced by the GSC in consistent with the experimental data. On the other hand, the GSC enhances the neutron skin thickness of 48Ca and 208Pb. The effect of GSC on the total binding energy is also evaluated by the quasi-boson approximation. The effect of the tensor interaction is found small on both the density distributions and the binding energies.
