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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2023
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| Sujets: | |
| Accès en ligne: | https://arxiv.org/abs/2309.13128 |
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| _version_ | 1866916181136375808 |
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| author | van de Kraats, J. Ahmed-Braun, D. J. M. Li, J. -L. Kokkelmans, S. J. J. M. F. |
| author_facet | van de Kraats, J. Ahmed-Braun, D. J. M. Li, J. -L. Kokkelmans, S. J. J. M. F. |
| contents | We resolve the unexpected and long-standing disagreement between experiment and theory in the Efimovian three-body spectrum of Li-7, commonly referred to as the lithium few-body puzzle. Our results show that the discrepancy arises out of the presence of strong non-universal three-body spin-exchange interactions, which enact an effective inflation of the universal Efimov spectrum. This conclusion is obtained from a thorough numerical solution of the quantum mechanical three-body problem, including precise interatomic interactions and all spin degrees of freedom for three alkali-metal atoms. Our results show excellent agreement with the experimental data regarding both the Efimov spectrum and the absolute rate constants of three-body recombination, and in addition reveal a general product propensity for such triatomic reactions in the Paschen-Back regime, stemming from Wigner's spin conservation rule. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2309_13128 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Emergent inflation of the Efimov spectrum under three-body spin-exchange interactions van de Kraats, J. Ahmed-Braun, D. J. M. Li, J. -L. Kokkelmans, S. J. J. M. F. Quantum Gases We resolve the unexpected and long-standing disagreement between experiment and theory in the Efimovian three-body spectrum of Li-7, commonly referred to as the lithium few-body puzzle. Our results show that the discrepancy arises out of the presence of strong non-universal three-body spin-exchange interactions, which enact an effective inflation of the universal Efimov spectrum. This conclusion is obtained from a thorough numerical solution of the quantum mechanical three-body problem, including precise interatomic interactions and all spin degrees of freedom for three alkali-metal atoms. Our results show excellent agreement with the experimental data regarding both the Efimov spectrum and the absolute rate constants of three-body recombination, and in addition reveal a general product propensity for such triatomic reactions in the Paschen-Back regime, stemming from Wigner's spin conservation rule. |
| title | Emergent inflation of the Efimov spectrum under three-body spin-exchange interactions |
| topic | Quantum Gases |
| url | https://arxiv.org/abs/2309.13128 |