标题： 自洽随机相位近似计算中的张量有效相互作用 显示英文标题

标题： Tensor effective interaction in self-consistent Random Phase Approximation calculations

摘要： 我们研究了有效相互作用中的张量-同位旋项在Hartree-Fock和随机相位近似计算中的影响。 我们使用了Gogny类型的有限范围力，并在其中添加了一个张量-同位旋项，该术语在核子间距离较大时，表现得类似于微观相互作用中的相应项。 此张量力的强度被选择为再现氧-$^{16}$0 中最低 0$^-$激发态的实验能量，这表明该相互作用项对该态具有高度敏感性。 利用这些有限范围的相互作用，我们研究了张量-同位旋力对碳、氧、钙、镍、锆、锡和铅同位素基态和激发态的影响。 我们的结果表明，张量力主要影响核子单粒子能级。 然而，我们发现了一些有趣的情况，其中也表现出整体核性质对张量相互作用的敏感性。 显示英文摘要

摘要： We present a study of the effects of the tensor-isospin term of the effective interaction in Hartree-Fock and Random Phase Approximation calculations. We used finite-range forces of Gogny type, and we added to them a tensor-isospin term which behaves, at large internucleonic distances, as the analogous term of the microscopic interactions. The strength of this tensor force has been chosen to reproduce the experimental energy of the lowest 0$^-$ excited state in $^{16}$O, which shows large sensitivity to this term of the interaction. With these finite-range interactions, we have studied the effects of the tensor-isospin force in ground and excited states of carbon, oxygen, calcium, nickel, zirconium, tin and lead isotopes. Our results show that the tensor force affects mainly the nucleon single particle energies. However, we found some interesting cases where also bulk nuclear properties are sensitive to the tensor interaction.