Traveling supersolid stripe patterns in spin-orbit-coupled Bose-Einstein condensates
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arXiv
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| Hauptverfasser: | , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| _version_ | 1866917231885025280 |
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| author | Martone, G. I. Shlyapnikov, G. V. |
| author_facet | Martone, G. I. Shlyapnikov, G. V. |
| contents | We consider a traveling supersolid stripe pattern in a spin-orbit-coupled Bose gas. This configuration is associated with an unequal population of the two single-particle energy minima, giving rise to a chemical potential difference that sets the fringe velocity. Unlike stationary stripes, the moving pattern is spin-polarized, with decreasing contrast as the population imbalance increases, eventually leading to stripe melting and transition to the uniform plane-wave phase. The Bogoliubov spectrum of the moving stripes exhibits asymmetry under inversion of the excitation quasimomentum. At high population imbalance, we identify energetic and dynamical instabilities in the spin-phonon mode which transforms to the roton mode of the plane-wave phase as the stripe structure vanishes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_07322 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Traveling supersolid stripe patterns in spin-orbit-coupled Bose-Einstein condensates Martone, G. I. Shlyapnikov, G. V. Quantum Gases We consider a traveling supersolid stripe pattern in a spin-orbit-coupled Bose gas. This configuration is associated with an unequal population of the two single-particle energy minima, giving rise to a chemical potential difference that sets the fringe velocity. Unlike stationary stripes, the moving pattern is spin-polarized, with decreasing contrast as the population imbalance increases, eventually leading to stripe melting and transition to the uniform plane-wave phase. The Bogoliubov spectrum of the moving stripes exhibits asymmetry under inversion of the excitation quasimomentum. At high population imbalance, we identify energetic and dynamical instabilities in the spin-phonon mode which transforms to the roton mode of the plane-wave phase as the stripe structure vanishes. |
| title | Traveling supersolid stripe patterns in spin-orbit-coupled Bose-Einstein condensates |
| topic | Quantum Gases |
| url | https://arxiv.org/abs/2506.07322 |