Elementary considerations on possible entropy-driven cosmological evolutions
Fuente:
arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866918034582536192 |
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| author | Thézier, Jamy-Jayme Barrau, Aurélien Martineau, Killian |
| author_facet | Thézier, Jamy-Jayme Barrau, Aurélien Martineau, Killian |
| contents | For several independent reasons, the idea that notorious sources of entropy could exist in the Universe has been recently revived. Taking advantage of a new framework accounting for non-equilibrium processes in cosmology, we explicitly investigate the cosmological dynamics as a function of the entropy production, focusing on the stability of the system. An exhaustive investigation is performed. As the main physical conclusion, we show that for a wide class of entropy source terms, the fluid dynamics converges towards an effective cosmological constant. Constraints on the associated entropic force are also obtained. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_15146 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Elementary considerations on possible entropy-driven cosmological evolutions Thézier, Jamy-Jayme Barrau, Aurélien Martineau, Killian General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology For several independent reasons, the idea that notorious sources of entropy could exist in the Universe has been recently revived. Taking advantage of a new framework accounting for non-equilibrium processes in cosmology, we explicitly investigate the cosmological dynamics as a function of the entropy production, focusing on the stability of the system. An exhaustive investigation is performed. As the main physical conclusion, we show that for a wide class of entropy source terms, the fluid dynamics converges towards an effective cosmological constant. Constraints on the associated entropic force are also obtained. |
| title | Elementary considerations on possible entropy-driven cosmological evolutions |
| topic | General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2501.15146 |