Magnetic Feshbach resonances in ultracold atom-molecule collisions
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arXiv
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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866910593143799808 |
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| author | Morita, Masato Kosicki, Maciej B. Zuchowski, Piotr S. Brumer, Paul Tscherbul, Timur V. |
| author_facet | Morita, Masato Kosicki, Maciej B. Zuchowski, Piotr S. Brumer, Paul Tscherbul, Timur V. |
| contents | We report numerically exact quantum scattering calculations on magnetic Feshbach resonances in ultracold, strongly anisotropic atom-molecule [Rb($^2$S) + SrF($^2Σ^+$)] collisions based on state-of-the-art ab initio potential energy surfaces. We find broad resonances mediated by the intermolecular spin-exchange interaction, as well as narrow resonances due to the intramolecular spin-rotation interaction, which are unique to atom-molecule collisions. Remarkably, the density of resonances in atom-molecule collisions is not much higher than that in atomic collisions despite the presence of a dense manifold of molecular rotational states, which can be rationalized by analyzing the adiabatic states of the collision complex. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_00618 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Magnetic Feshbach resonances in ultracold atom-molecule collisions Morita, Masato Kosicki, Maciej B. Zuchowski, Piotr S. Brumer, Paul Tscherbul, Timur V. Atomic Physics Quantum Gases Chemical Physics We report numerically exact quantum scattering calculations on magnetic Feshbach resonances in ultracold, strongly anisotropic atom-molecule [Rb($^2$S) + SrF($^2Σ^+$)] collisions based on state-of-the-art ab initio potential energy surfaces. We find broad resonances mediated by the intermolecular spin-exchange interaction, as well as narrow resonances due to the intramolecular spin-rotation interaction, which are unique to atom-molecule collisions. Remarkably, the density of resonances in atom-molecule collisions is not much higher than that in atomic collisions despite the presence of a dense manifold of molecular rotational states, which can be rationalized by analyzing the adiabatic states of the collision complex. |
| title | Magnetic Feshbach resonances in ultracold atom-molecule collisions |
| topic | Atomic Physics Quantum Gases Chemical Physics |
| url | https://arxiv.org/abs/2406.00618 |