Suppression of capillary instability in a confined quantum liquid filament
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866916844650102784 |
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| author | Ancilotto, Francesco Modugno, Michele Fort, Chiara |
| author_facet | Ancilotto, Francesco Modugno, Michele Fort, Chiara |
| contents | Quantum Bose-Bose mixtures with strong attraction can form self-bound, liquid-like droplets stabilized by quantum fluctuations. Despite equilibrium densities much lower than those of classical liquids, these droplets exhibit finite surface tension and liquid-like behaviors. Recent experiments have demonstrated Rayleigh-Plateau instability in elongated droplets confined in an optical waveguide. Here we consider the case of an infinite filament and extend the theoretical description to include transverse harmonic confinement. By solving the Bogoliubov-deGennes equations within a single-component framework, benchmarked against full Gross-Pitaevskii simulations, we show that increasing confinement progressively suppresses the instability, leading to complete stabilization beyond a critical trap frequency. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_11223 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Suppression of capillary instability in a confined quantum liquid filament Ancilotto, Francesco Modugno, Michele Fort, Chiara Quantum Gases Quantum Bose-Bose mixtures with strong attraction can form self-bound, liquid-like droplets stabilized by quantum fluctuations. Despite equilibrium densities much lower than those of classical liquids, these droplets exhibit finite surface tension and liquid-like behaviors. Recent experiments have demonstrated Rayleigh-Plateau instability in elongated droplets confined in an optical waveguide. Here we consider the case of an infinite filament and extend the theoretical description to include transverse harmonic confinement. By solving the Bogoliubov-deGennes equations within a single-component framework, benchmarked against full Gross-Pitaevskii simulations, we show that increasing confinement progressively suppresses the instability, leading to complete stabilization beyond a critical trap frequency. |
| title | Suppression of capillary instability in a confined quantum liquid filament |
| topic | Quantum Gases |
| url | https://arxiv.org/abs/2507.11223 |