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arxiv: 2208.04051 · v1 · pith:7MC2BGTNnew · submitted 2022-08-08 · 🌀 gr-qc · hep-th

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

Valerio Faraoni , Serena Giardino , Andrea Giusti , Robert Vanderwee This is my paper
classification 🌀 gr-qc hep-th
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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