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arXiv · 2509.11919

Cosmological FLRW phase transitions under exponential corrected entropy

Rodrigo Rivadeneira-Caro·Joel F. Saavedra·Francisco Tello-Ortiz
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Abstract

This work considers how exponential corrections to the Bekenstein-Hawking entropy formula affect the thermodynamic behavior of the FLRW cosmological model. These corrections drastically change the form of the Friedman field equations inducing non-trivial phase transition behavior. For negative values of the trace parameter $α$, the system presents first-order phase transitions above the critical temperature, and for positive $α$, the system undergoes a reentrant phase transition. As these corrections are presumably relevant at the early Universe stage, to corroborate the presence of some potential vestige of this contribution in the current era, a study has been carried out comparing observational data and current values of the Hubble parameter.

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Rodrigo Rivadeneira-Caro, Joel F. Saavedra, Francisco Tello-Ortiz. 2025-11-24. Cosmological FLRW phase transitions under exponential corrected entropy. https://arxiv.org/abs/2509.11919

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