标题： 赝自旋对称性中张量力的意义 显示英文标题

标题： Significance of tensor force in pseudo-spin symmetry

摘要： 我们指出，原子核的准自旋对称性（PSS）显著依赖于质子数（$Z$）和中子数（$N$），有时会导致特征结构的出现。通过使用带有现实张量力的非相对论球对称Hartree-Fock计算，我们表明张量力可能与PSS对$Z$和$N$的依赖性密切相关。尽管PSS通常在相对论对称性的背景下被讨论，但张量力对PSS的影响有时看起来类似于在没有明确张量力的相对论平均场（RMF）计算中PSS对$Z$和$N$的依赖性。 观测到的从$^{40}$钙到$^{34}$硅的$p0d_{3/2}$-$p1s_{1/2}$水平变化与基于张量力驱动的PSS的$Z$依赖性一致，但不一定与RMF结果一致。尽管现在下结论还为时过早，但这一结果阐明了讨论PSS时张量力的重要性。 显示英文摘要

摘要： We point out that the pseudo-spin symmetry (PSS) of nuclei significantly depends on the proton ($Z$) and neutron numbers ($N$), sometimes giving rise to the characteristic structures. By using the non-relativistic spherical Hartree-Fock calculation with a realistic tensor force, we show that the tensor force may be deeply relevant to the $Z$- and $N$-dependence of the PSS. While the PSS has often been discussed in the context of the relativistic symmetry, the tensor-force effects on the PSS sometimes look analogous to the $Z$-and $N$-dependence of the PSS in the relativistic mean-field (RMF) calculations without explicit tensor force. The observed variation of the $p0d_{3/2}$-$p1s_{1/2}$ levels from $^{40}$Ca to $^{34}$Si is consistent with the tensor-force-driven $Z$-dependence of the PSS, but not necessarily with the RMF result. Even though it is too early to be conclusive, this result elucidates the significance of the tensor force when discussing the PSS.