论文标题
四重奏和对的共存,甚至均匀
Coexistence of quartets and pairs in even-even $N>Z$ nuclei
论文作者
论文摘要
我们分析了在同一主要的壳中移动的核子,并通过壳模型类型的逼真的两体力进行相互作用,分析了均匀的$ n> z $核的基态结构。我们将这些核的基态表示为四重奏项的产物,该术语代表$ n = z $子系统,以及用多余的中子构建的一对冷凝物。讨论了该近似值的准确性,用于$ SD $和$ pf $主要壳的核核。
We analyse the structure of the ground states of even-even $N>Z$ nuclei with nucleons moving in the same major shell and interacting via realistic two-body forces of shell-model type. We express the ground states of these nuclei as a product of a quartet term, which represents the $N = Z$ subsystem, and a pair condensate built with the excess neutrons. The accuracy of this approximation is discussed for nuclei with valence nucleons in the $sd$ and $pf$ major shells.