Year: 2025
Type: article
Abstract: For several independent reasons, the idea that notorious sources of entropy could exist in the Universe has been recently revived. By taking advantage of a new framework accounting for nonequilibrium 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 toward an effective cosmological constant. Constraints on the associated entropic force are also obtained.
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4406880178