Efimovian Phonon Production for an Analog Coasting Universe in Bose-Einstein Condensates
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arXiv
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2026
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| _version_ | 1866915868541190144 |
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| author | Xue, Yunfei Wang, Jiabin Chen, Li Lv, Chenwei Zhang, Ren |
| author_facet | Xue, Yunfei Wang, Jiabin Chen, Li Lv, Chenwei Zhang, Ren |
| contents | Efimov effects arise from scale invariance, a fundamental symmetry with universal implications. While spatial Efimov physics has been extensively studied, realizing its temporal counterpart remains challenging, as it requires a dynamical system that breaks time-translation symmetry yet preserves the essential time-scaling symmetry. Analog cosmology offers a powerful platform to address this challenge, bridging the domains of Efimov physics and cosmology. Here, we predict a temporal Efimov effect in an analog linearly expanding universe realized with a quasi-two-dimensional Bose-Einstein condensate. The invariance of phonon mode equations under time rescaling leads to particle production with two distinct dynamics: power-law growth and log-periodic oscillations, with the latter being the hallmark signature of the Efimov effect. Furthermore, these dynamics map directly onto sub- and super-horizon cosmological modes. Our predictions can be directly verified through time-averaged measurements of the density-fluctuation spectrum $S_{k}(t)$ in current experiments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_16095 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Efimovian Phonon Production for an Analog Coasting Universe in Bose-Einstein Condensates Xue, Yunfei Wang, Jiabin Chen, Li Lv, Chenwei Zhang, Ren Quantum Gases Quantum Physics Efimov effects arise from scale invariance, a fundamental symmetry with universal implications. While spatial Efimov physics has been extensively studied, realizing its temporal counterpart remains challenging, as it requires a dynamical system that breaks time-translation symmetry yet preserves the essential time-scaling symmetry. Analog cosmology offers a powerful platform to address this challenge, bridging the domains of Efimov physics and cosmology. Here, we predict a temporal Efimov effect in an analog linearly expanding universe realized with a quasi-two-dimensional Bose-Einstein condensate. The invariance of phonon mode equations under time rescaling leads to particle production with two distinct dynamics: power-law growth and log-periodic oscillations, with the latter being the hallmark signature of the Efimov effect. Furthermore, these dynamics map directly onto sub- and super-horizon cosmological modes. Our predictions can be directly verified through time-averaged measurements of the density-fluctuation spectrum $S_{k}(t)$ in current experiments. |
| title | Efimovian Phonon Production for an Analog Coasting Universe in Bose-Einstein Condensates |
| topic | Quantum Gases Quantum Physics |
| url | https://arxiv.org/abs/2603.16095 |