Elementary considerations on possible entropy-driven cosmological evolutions
General Relativity and Quantum Cosmology
2025-05-27 v2 Cosmology and Nongalactic Astrophysics
High Energy Physics - Phenomenology
Abstract
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.
Cite
@article{arxiv.2501.15146,
title = {Elementary considerations on possible entropy-driven cosmological evolutions},
author = {Jamy-Jayme Thézier and Aurélien Barrau and Killian Martineau},
journal= {arXiv preprint arXiv:2501.15146},
year = {2025}
}