Thermodynamics of scale-dependent Friedmann equations

Pedro Bargueño (Departamento de Física Aplicada, Universidad de Alicante, Campus de San Vicente del Raspeig, Alicante, 03690, Spain) ; Ernesto Contreras (Departamento de Física, Colegio de Ciencias e Ingeniería, Universidad San Francisco de Quito, Quito, Ecuador) ; Ángel Rincón (Instituto de Física, Pontificia Universidad Católica de Valparaíso, Avenida Brasil 2950, Casilla, Valparaiso, 4059, Chile)

In this work, the role of a time-varying Newton constant under the scale-dependent approach is investigated in the thermodynamics of the Friedman equations. In particular, we show that the extended Friedman equations can be derived either from equilibrium thermodynamics when the non-matter energy momentum tensor is interpreted as a fluid or from non-equilibrium thermodynamics when an entropy production term, which depends on the time-varying Newton constant, is included. Finally, a comparison between black hole and cosmological thermodynamics in the framework of scale-dependent gravity is briefly discussed.

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Published on:
31 May 2021
Publisher:
Springer
Published in:
European Physical Journal C , Volume 81 (2021)
Issue 5
Pages 1-6
DOI:
https://doi.org/10.1140/epjc/s10052-021-09274-7
Copyrights:
The Author(s)
Licence:
CC-BY-4.0

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