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arXiv · 2306.10252

Thermodynamics of $f(R)$ Gravity: The Double Well Potential Case

C. D. Peralta·S. E. Jorás
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Abstract

In this work we further extend the analysis of $f(R)$ theories of gravity in the metric formalism under the approach of a Thermodynamics analogy, proposed in arXiv:1911.04830v3. Here we assume a double-well inflationary potential in the Einstein frame and obtain a parametric form of $f(R)$ in the corresponding Jordan frame. The whole Thermodynamics picture then follows: an equation of state, binodal and spinodal curves, phase transition, critical quantities (pressure, volume and temperature), entropy jumps, specific-heat divergence (and the corresponding critical exponent) and a butterfly catastrophe.

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C. D. Peralta, S. E. Jorás. 2023-06-17. Thermodynamics of $f(R)$ Gravity: The Double Well Potential Case. https://arxiv.org/abs/2306.10252

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