Phase Dynamics of Self-Accelerating Bose-Einstein Condensates
Fuente:
arXiv
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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866917239759831040 |
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| author | Pellner, Maximilian L. D. D. Rozenman, Georgi Gary |
| author_facet | Pellner, Maximilian L. D. D. Rozenman, Georgi Gary |
| contents | Self-accelerating Airy matter waves offer a clean setting to access the cubic Kennard phase. Here we reconstruct the relative phase of simulated Airy-shaped Bose-Einstein condensates in free space, a regime approached in microgravity, from interference fringes. The cubic phase dynamics are quantified via windowed polynomial fits with systematics-aware uncertainty estimates that account for window-induced correlations. We compare two experimentally feasible phase-extraction methods - heterodyne-based and density-based - and show that an Airy-Gaussian geometry yields substantially improved robustness to fit-window selection relative to an Airy-Airy collision. In the weakly interacting regime, the extracted cubic coefficient responds linearly to the effective one-dimensional interaction strength. Our approach turns cubic phase dynamics into a practical probe of weak mean-field nonlinearities in self-accelerating condensates. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_01406 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Phase Dynamics of Self-Accelerating Bose-Einstein Condensates Pellner, Maximilian L. D. D. Rozenman, Georgi Gary Quantum Gases Atomic Physics Computational Physics Quantum Physics Self-accelerating Airy matter waves offer a clean setting to access the cubic Kennard phase. Here we reconstruct the relative phase of simulated Airy-shaped Bose-Einstein condensates in free space, a regime approached in microgravity, from interference fringes. The cubic phase dynamics are quantified via windowed polynomial fits with systematics-aware uncertainty estimates that account for window-induced correlations. We compare two experimentally feasible phase-extraction methods - heterodyne-based and density-based - and show that an Airy-Gaussian geometry yields substantially improved robustness to fit-window selection relative to an Airy-Airy collision. In the weakly interacting regime, the extracted cubic coefficient responds linearly to the effective one-dimensional interaction strength. Our approach turns cubic phase dynamics into a practical probe of weak mean-field nonlinearities in self-accelerating condensates. |
| title | Phase Dynamics of Self-Accelerating Bose-Einstein Condensates |
| topic | Quantum Gases Atomic Physics Computational Physics Quantum Physics |
| url | https://arxiv.org/abs/2602.01406 |