Vortex dipoles in expanding shell-shaped Bose-Einstein condensates
Fuente:
arXiv
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| Autore principale: | |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866910157021118464 |
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| author | Tononi, A. |
| author_facet | Tononi, A. |
| contents | Releasing shell-shaped Bose-Einstein condensates from their confinement produces a spherically symmetric density distribution characterized by concentric ripples surrounding a central peak. Here we investigate how a vortex-antivortex dipole affects this dynamics, finding that increasing dipole separation progressively breaks the spherical symmetry and, correspondingly, the interplay of vortex physics and curvature produces a non-monotonic behavior of the cloud aspect ratio. These features can be used for preparing and detecting vortex dipoles in shell-shaped superfluids, as well as for analyzing their signatures in other thin superfluids with more general curved geometries. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_20407 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Vortex dipoles in expanding shell-shaped Bose-Einstein condensates Tononi, A. Quantum Gases Releasing shell-shaped Bose-Einstein condensates from their confinement produces a spherically symmetric density distribution characterized by concentric ripples surrounding a central peak. Here we investigate how a vortex-antivortex dipole affects this dynamics, finding that increasing dipole separation progressively breaks the spherical symmetry and, correspondingly, the interplay of vortex physics and curvature produces a non-monotonic behavior of the cloud aspect ratio. These features can be used for preparing and detecting vortex dipoles in shell-shaped superfluids, as well as for analyzing their signatures in other thin superfluids with more general curved geometries. |
| title | Vortex dipoles in expanding shell-shaped Bose-Einstein condensates |
| topic | Quantum Gases |
| url | https://arxiv.org/abs/2604.20407 |