First-order phase transition in atom-molecule quantum degenerate mixtures with coherent three-body recombination
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arXiv
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| Hauptverfasser: | , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866912899333619712 |
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| author | Bougas, G. A. Vardi, A. Sadeghpour, H. R. Chin, C. Mistakidis, S. I. |
| author_facet | Bougas, G. A. Vardi, A. Sadeghpour, H. R. Chin, C. Mistakidis, S. I. |
| contents | We map the phase diagram of a two-mode atom-molecule Bose-Einstein condensate with Fano-Feshbach and coherent three-body recombination (cTBR) terms. The standard second order phase transition observed as the molecular energy is tuned through the Feshbach resonance, is replaced by a first order transition when cTBR becomes prominent, due to a double-well structure in the free energy landscape. This transition is associated with atom-molecule entanglement, bistability, and molecular metastability. Our results establish cTBR as a powerful knob for quantum state engineering and control of reaction dynamics in ultracold chemistry. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_11637 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | First-order phase transition in atom-molecule quantum degenerate mixtures with coherent three-body recombination Bougas, G. A. Vardi, A. Sadeghpour, H. R. Chin, C. Mistakidis, S. I. Quantum Gases Quantum Physics We map the phase diagram of a two-mode atom-molecule Bose-Einstein condensate with Fano-Feshbach and coherent three-body recombination (cTBR) terms. The standard second order phase transition observed as the molecular energy is tuned through the Feshbach resonance, is replaced by a first order transition when cTBR becomes prominent, due to a double-well structure in the free energy landscape. This transition is associated with atom-molecule entanglement, bistability, and molecular metastability. Our results establish cTBR as a powerful knob for quantum state engineering and control of reaction dynamics in ultracold chemistry. |
| title | First-order phase transition in atom-molecule quantum degenerate mixtures with coherent three-body recombination |
| topic | Quantum Gases Quantum Physics |
| url | https://arxiv.org/abs/2602.11637 |