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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2507.01369 |
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| _version_ | 1866912460270731264 |
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| author | Zhou, E. F. Yao, J. M. Engel, J. Meng, J. |
| author_facet | Zhou, E. F. Yao, J. M. Engel, J. Meng, J. |
| contents | We compute the nuclear Schiff moments of the diamagnetic atoms $^{129}$Xe, $^{199}$Hg, and $^{225}$Ra in multireference covariant density functional theory. Beyond-mean-field correlations, arising from symmetry restoration and shape mixing, are incorporated via the generator coordinate method with projection onto states with well-defined parity, particle number, and angular momentum. Our results reveal a correlation between the contributions of nuclear intermediate states to Schiff moments and the electric dipole transition strengths from these states to the ground state. The new beyond-mean-field effects can either enhance or suppress the Schiff moments. In $^{225}$Ra, they do the latter, reducing the enhancement from octupole deformation somewhat. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_01369 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Effects of beyond-mean-field correlations on nuclear Schiff moments Zhou, E. F. Yao, J. M. Engel, J. Meng, J. Nuclear Theory High Energy Physics - Phenomenology Atomic Physics We compute the nuclear Schiff moments of the diamagnetic atoms $^{129}$Xe, $^{199}$Hg, and $^{225}$Ra in multireference covariant density functional theory. Beyond-mean-field correlations, arising from symmetry restoration and shape mixing, are incorporated via the generator coordinate method with projection onto states with well-defined parity, particle number, and angular momentum. Our results reveal a correlation between the contributions of nuclear intermediate states to Schiff moments and the electric dipole transition strengths from these states to the ground state. The new beyond-mean-field effects can either enhance or suppress the Schiff moments. In $^{225}$Ra, they do the latter, reducing the enhancement from octupole deformation somewhat. |
| title | Effects of beyond-mean-field correlations on nuclear Schiff moments |
| topic | Nuclear Theory High Energy Physics - Phenomenology Atomic Physics |
| url | https://arxiv.org/abs/2507.01369 |