论文标题
核席夫矩与电磁特性的相关性的限制
Constraints on the nuclear Schiff moment from its correlation with electromagnetic properties
论文作者
论文摘要
我们使用大规模的壳体模型计算研究了$^{129} $ XE的核席夫力矩和$^{199} $ Hg。对于$^{129} $ XE，我们发现了前阶贡献与磁矩之间的线性关系，这对于降低理论不确定性非常有用。传统的模型空间不包含$ 0G_ {9/2} $和$ 0H_ {9/2} $ orbitals，这些$ orbitals通过大型矩阵元素连接到Spin-Orbit合作伙伴。因此，为了评估常规模型空间之外相关的单粒子轨道的影响，我们采用了准粒子真空壳模型方法。此外，次要领先的贡献是由核内部的平等和时间逆转的。我们证明这些次要效应不会引起对相关性的任何显着干扰。此外，我们报告了$^{199} $ Hg的核Schiff力矩系数的壳模型结果。与以前的研究相比，本研究获得的结果相当大，表明对中子电偶极矩的灵敏度更高。
We study the nuclear Schiff moments of $^{129}$Xe and $^{199}$Hg induced by the nucleon electric dipole moment using large-scale shell model calculations. For $^{129}$Xe, we find a linear relation between the leading-order contribution and magnetic moment, which would be useful in reducing the theoretical uncertainty. The conventional model space does not contain the $ 0g_{ 9/2 } $ and $ 0h_{ 9/2 } $ orbitals, which are connected to the spin-orbit partners by large matrix elements. Thus, to evaluate the influence of the relevant single-particle orbitals outside the conventional model space, we apply the quasiparticle vacua shell model method. Moreover, the next-to-leading-order contribution arises from parity and time-reversal violation inside the nucleus. We demonstrate that these secondary effects do not induce any significant disturbance to the correlation. Additionally, we report the shell model results for the nuclear Schiff moment coefficients of $^{199}$Hg. Compared to previous studies, the results obtained in this study are rather large, indicating a higher sensitivity to the neutron electric dipole moment.
