Probing cosmic expansion through small anisotropies in a Bose-Einstein condensate analogue
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866913812909654016 |
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| author | de Freitas, Miguel Citeli Nivaille, Thaïs Ribeiro, Caio C. Holanda |
| author_facet | de Freitas, Miguel Citeli Nivaille, Thaïs Ribeiro, Caio C. Holanda |
| contents | In this letter, it is shown that by measuring quantities like density variance in the present state of an analogue universe one can assess information about its history due to the mere existence of small anisotropies in earlier times, here modeled by non-uniform densities. This offers a valuable tool to probe and compare cosmic expansion models and, as an application, it is shown that quantum fluctuations can have a significant impact on the observable universe depending on its history. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_21236 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Probing cosmic expansion through small anisotropies in a Bose-Einstein condensate analogue de Freitas, Miguel Citeli Nivaille, Thaïs Ribeiro, Caio C. Holanda General Relativity and Quantum Cosmology In this letter, it is shown that by measuring quantities like density variance in the present state of an analogue universe one can assess information about its history due to the mere existence of small anisotropies in earlier times, here modeled by non-uniform densities. This offers a valuable tool to probe and compare cosmic expansion models and, as an application, it is shown that quantum fluctuations can have a significant impact on the observable universe depending on its history. |
| title | Probing cosmic expansion through small anisotropies in a Bose-Einstein condensate analogue |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2504.21236 |