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Scalar field as a perfect fluid: thermodynamics of minimally coupled scalars and Einstein frame scalar-tensor gravity

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arxiv 2208.04051 v1 pith:7MC2BGTN submitted 2022-08-08 gr-qc hep-th

Valerio Faraoni , Serena Giardino , Andrea Giusti , Robert Vanderwee This is my paper · ORCID
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keywords analogycoupledeinsteinfieldfluidframegravityminimally
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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.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Disentangling Similarity and Relatedness in Topic Models

    cs.CL 2026-03 unverdicted novelty 7.0 of 10

    Topic models lie on a spectrum from thematic-relatedness-rich to similarity-rich, and that position predicts which downstream tasks they handle well.

  2. Black hole interiors in the thermal view of scalar-tensor gravity

    gr-qc 2025-05 conditional novelty 4.0 of 10

    In the thermal view of Brans-Dicke gravity, black hole singularities are 'hot': the effective temperature KT diverges as 1/t, and a fluid with P=wρ controls whether gravity approaches or departs from general relativity.

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