Vortex to Rotons Transition in Dipolar Bose-Einstein Condensates
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866913943684907008 |
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| author | Villois, Alberto Onorato, Miguel Proment, Davide |
| author_facet | Villois, Alberto Onorato, Miguel Proment, Davide |
| contents | Recent experimental advancements enabled the creation of various systems exhibiting superfluid behavior, with one notable achievement being the development of dipolar Bose-Einstein condensates (dBECs). When confined along one or more spatial dimensions, these condensates exhibit a dispersion relation reminiscent of superfluid liquid helium, featuring a roton-like minimum. This study investigates the existence of two-dimensional solitary waves in dBECs characterised by topological defects (quantised vortices) and their transition to vortex-free Jones-Roberts solitons. The explicit connection between solitary waves and roton excitation is demonstrated, supporting Feynman's hypothesis regarding the nature of rotons as fading vortex excitations. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2407_18412 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Vortex to Rotons Transition in Dipolar Bose-Einstein Condensates Villois, Alberto Onorato, Miguel Proment, Davide Quantum Gases Fluid Dynamics Recent experimental advancements enabled the creation of various systems exhibiting superfluid behavior, with one notable achievement being the development of dipolar Bose-Einstein condensates (dBECs). When confined along one or more spatial dimensions, these condensates exhibit a dispersion relation reminiscent of superfluid liquid helium, featuring a roton-like minimum. This study investigates the existence of two-dimensional solitary waves in dBECs characterised by topological defects (quantised vortices) and their transition to vortex-free Jones-Roberts solitons. The explicit connection between solitary waves and roton excitation is demonstrated, supporting Feynman's hypothesis regarding the nature of rotons as fading vortex excitations. |
| title | Vortex to Rotons Transition in Dipolar Bose-Einstein Condensates |
| topic | Quantum Gases Fluid Dynamics |
| url | https://arxiv.org/abs/2407.18412 |