张量耦合在改进的标量微分耦合模型中的作用

Tensor Coupling in Modified Derivative Scalar Coupling Model

研究了改进的标量微分耦合模型中，ω介子与核子张量耦合对于有限核计算的影响．张量耦合改善了标量微分耦合模型中有限核的自旋与轨道分裂；同时该张量耦合在核的中心区域表现为吸引作用，在核的表面区域表现为排斥作用，这一结果导致有限核填充在很低单粒子轨道的一些核子的能量因张量耦合而增大，填充在靠近费密面轨道的一些核子的能量因张量耦合而减小．

The tensor coupling of the ω meson to nucleon in modified derivative scalar coupling (MDSC) model for finite nuclei was investigated. In addition to the spin-orbit splittings improved by the tensor coupling, our results show that the tensor force (or the effect of the tensor coupling) shows attractive in the interior of nuclei, and then becomes repulsive in the surface region. As a result, the single-particle states are more bound for very deeplying orbits, and less bound for those very near the Fermi energies.