Impact of two-body currents on magnetic dipole moments of nuclei
| Autor: | Miyagi, T., Cao, X., Seutin, R., Bacca, S., Ruiz, R. F. Garcia, Hebeler, K., Holt, J. D., Schwenk, A. |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Phys. Rev. Lett. 132, 232503 (2024) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevLett.132.232503 |
| Popis: | We investigate the effects of two-body currents on magnetic dipole moments of medium-mass and heavy nuclei using the valence-space in-medium similarity renormalization group with chiral effective field theory interactions and currents. Focusing on near doubly magic nuclei from oxygen to bismuth, we have found that the leading two-body currents globally improve the agreement with experimental magnetic moments. Moreover, our results show the importance of multi-shell effects for $^{41}$Ca, which suggest that the $Z=N=20$ gap in $^{40}$Ca is not as robust as in $^{48}$Ca. The increasing contribution of two-body currents in heavier systems is explained by the operator structure of the center-of-mass dependent Sachs term. Comment: 6 pages, 4 figures, supplemental material included |
| Databáze: | arXiv |
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