Scattering halos in strongly interacting Feshbach molecular Bose-Einstein condensates
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866908327721566208 |
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| author | Chen, Yuying Zhang, Zhengxi Lai, Chi-Kin Liang, Yun Shui, Hongmian Fu, Haixiang Wei, Fansu Zhou, Xiaoji |
| author_facet | Chen, Yuying Zhang, Zhengxi Lai, Chi-Kin Liang, Yun Shui, Hongmian Fu, Haixiang Wei, Fansu Zhou, Xiaoji |
| contents | We investigate the scattering halos resulting from collisions between discrete momentum components in the time-of-flight expansion of interaction-tunable $^6\rm Li_2$ molecular Bose-Einstein condensates. A key highlight of this study is the observation of the influence of interactions on the collisional scattering process. We measure the production of scattering halos at different interaction levels by varying the number of particles and the scattering length, and quantitatively assess the applicability of perturbation theory. To delve into a general theory of scattering halos, we introduce a scattering factor and obtain a universal relation between it and the halo ratio. Furthermore, we simulate the formation of scattering halos under non-perturbative conditions and analyze the discrepancies between simulation results and experiments through a return pulse experiment. This study enhances our understanding of the physical mechanisms underlying scattering processes in many-body systems and provides new perspectives for further theoretical research. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_17319 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Scattering halos in strongly interacting Feshbach molecular Bose-Einstein condensates Chen, Yuying Zhang, Zhengxi Lai, Chi-Kin Liang, Yun Shui, Hongmian Fu, Haixiang Wei, Fansu Zhou, Xiaoji Quantum Gases Quantum Physics We investigate the scattering halos resulting from collisions between discrete momentum components in the time-of-flight expansion of interaction-tunable $^6\rm Li_2$ molecular Bose-Einstein condensates. A key highlight of this study is the observation of the influence of interactions on the collisional scattering process. We measure the production of scattering halos at different interaction levels by varying the number of particles and the scattering length, and quantitatively assess the applicability of perturbation theory. To delve into a general theory of scattering halos, we introduce a scattering factor and obtain a universal relation between it and the halo ratio. Furthermore, we simulate the formation of scattering halos under non-perturbative conditions and analyze the discrepancies between simulation results and experiments through a return pulse experiment. This study enhances our understanding of the physical mechanisms underlying scattering processes in many-body systems and provides new perspectives for further theoretical research. |
| title | Scattering halos in strongly interacting Feshbach molecular Bose-Einstein condensates |
| topic | Quantum Gases Quantum Physics |
| url | https://arxiv.org/abs/2412.17319 |