Multichannel quantum defect theory with a frame transformation for ultracold atom-molecule collisions in magnetic fields
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2023
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| _version_ | 1866917770460921856 |
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| author | Morita, Masato Brumer, Paul Tscherbul, Timur V. |
| author_facet | Morita, Masato Brumer, Paul Tscherbul, Timur V. |
| contents | We extend the powerful formalism of multichannel quantum defect theory combined with a frame transformation to ultracold atom-molecule collisions in magnetic fields. By solving the coupled-channel equations with hyperfine and Zeeman interactions omitted at short range, the extended theory enables a drastically simplified description of the intricate quantum dynamics of ultracold molecular collisions in terms of a small number of short-range parameters. We apply the formalism to ultracold Mg + NH collisions in a magnetic field, achieving a 10$^4$-fold reduction in computational effort. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2309_00263 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Multichannel quantum defect theory with a frame transformation for ultracold atom-molecule collisions in magnetic fields Morita, Masato Brumer, Paul Tscherbul, Timur V. Chemical Physics Atomic Physics We extend the powerful formalism of multichannel quantum defect theory combined with a frame transformation to ultracold atom-molecule collisions in magnetic fields. By solving the coupled-channel equations with hyperfine and Zeeman interactions omitted at short range, the extended theory enables a drastically simplified description of the intricate quantum dynamics of ultracold molecular collisions in terms of a small number of short-range parameters. We apply the formalism to ultracold Mg + NH collisions in a magnetic field, achieving a 10$^4$-fold reduction in computational effort. |
| title | Multichannel quantum defect theory with a frame transformation for ultracold atom-molecule collisions in magnetic fields |
| topic | Chemical Physics Atomic Physics |
| url | https://arxiv.org/abs/2309.00263 |