论文标题
从磁偶极激发辨别核配对性能
Discerning nuclear pairing properties from magnetic dipole excitation
论文作者
论文摘要
库珀对的配对相关性是多屈光度相互作用系统的基本属性。对于核子，可能存在两种模式的库珀对耦合模式，即$ s_ {12} = 0 $，带有$ l_ {12} = 0 $（Spin-singlet S-Wave）和$ s_ {12} = 1 $ with $ l_ {12} = 1 $（spin-triplet pwave）。在核物理学中，旋转单词或自旋三链耦合是主导以及如何衡量其作用是一个空旷的问题。我们研究了相对论核能密度功能（RNENDF）框架内的磁偶极（M1）激发磁极（M1）激发之间的关系。相对论的Hartree-Bogoliubov（RHB）模型在基础状态下考虑了配对相关性，并采用相对论的准粒子随机相近似（RQRPA）来描述M1过渡。我们已经表明，M1激发属性在计算中涉及的配对模型上表现出灵敏度。对M1转变的系统评估以及准确的实验数据使我们能够辨别有限核中的配对特性。
Pairing correlation of Cooper pair is a fundamental property of multi-fermion interacting systems. For nucleons, two modes of the Cooper-pair coupling may exist, namely of $S_{12}=0$ with $L_{12}=0$ (spin-singlet s-wave) and $S_{12}=1$ with $L_{12}=1$ (spin-triplet p-wave). In nuclear physics, it has been an open question whether the spin-singlet or spin-triplet coupling is dominant, as well as how to measure their role. We investigate a relation between the magnetic-dipole (M1) excitation of nuclei and the pairing modes within the framework of relativistic nuclear energy-density functional (RNEDF). The pairing correlations are taken into account by the relativistic Hartree-Bogoliubov (RHB) model in the ground state, and the relativistic quasi-particle random-phase approximation (RQRPA) is employed to describe M1 transitions. We have shown that M1 excitation properties display a sensitivity on the pairing model involved in the calculations. The systematic evaluation of M1 transitions together with the accurate experimental data enables us to discern the pairing properties in finite nuclei.
