Scalar field as a perfect fluid: thermodynamics of minimally coupled scalars and Einstein frame scalar-tensor gravity
General Relativity and Quantum Cosmology
2023-02-01 v1 High Energy Physics - Theory
Abstract
We revisit the analogy between a minimally coupled scalar field in general relativity and a perfect fluid, correcting previous identifications of effective temperature and chemical potential. This provides a useful complementary picture for the first-order thermodynamics of scalar-tensor gravity, paving the way for the Einstein frame formulation (which eluded previous attempts) and raises interesting questions to further develop the analogy.
Keywords
Cite
@article{arxiv.2208.04051,
title = {Scalar field as a perfect fluid: thermodynamics of minimally coupled scalars and Einstein frame scalar-tensor gravity},
author = {Valerio Faraoni and Serena Giardino and Andrea Giusti and Robert Vanderwee},
journal= {arXiv preprint arXiv:2208.04051},
year = {2023}
}
Comments
19 pages, latex