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arXiv 2103.06365nucl-thhep-th
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轻核电偶极矩的从头计算

Ab initio calculations of electric dipole moments of light nuclei

Paul Froese, Petr Navratil

摘要:

在任何有限系统中,非零永久电偶极矩(EDM)的存在表明CP破坏超出了标准模型中预测的小破坏。在这里,我们使用从头算无核壳模型(NCSM)的框架,从理论上研究的幅度核EDM。我们利用手征二体和三体相互作用以及基于单介子交换模型的PT破坏哈密顿量计算了几个轻核的EDMs。我们提出了一个基准计算$^3$ He,以及更复杂的核$^{6,7}$ Li,$^9$ Be,$^{10,11}$ B,$^{13}$ C,$^{14,15}$ N和$^{19}$ F的结果。我们的结果表明,不同的核可以用来探测不同的条款PT破坏相互作用。这些计算使我们能够建议哪些原子核可能是寻找可测量的永久电偶极矩的好候选者。

英文摘要:

In any finite system, the presence of a non-zero permanent electric dipole moment (EDM) would indicate CP violation beyond the small violation predicted in the Standard Model. Here, we use the ab initio no-core shell model (NCSM) framework to theoretically investigate the magnitude of the nuclear EDM. We calculate EDMs of several light nuclei using chiral two- and three-body interactions and a PT-violating Hamiltonian based on a one-meson-exchange model. We present a benchmark calculation for $^3$He, as well as results for the more complex nuclei $^{6,7}$Li, $^9$Be, $^{10,11}$B, $^{13}$C, $^{14,15}$N, and $^{19}$F. Our results suggest that different nuclei can be used to probe different terms of the PT violating interaction. These calculations allow us to suggest which nuclei may be good candidates in the search for a measurable permanent electric dipole moment.

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