Past-directed scalar field gradients and scalar-tensor thermodynamics

Past-directed scalar field gradients and scalar-tensor thermodynamics

We refine and slightly enlarge the recently proposed first-order thermodynamics of scalar-tensor gravity to include gravitational scalar fields with timelike and past-directed gradients. The implications and subtleties arising in this situation are discussed and an exact cosmological solution of sca...

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Veröffentlicht in:arXiv.org 2022-10
Hauptverfasser: Giusti, Andrea, Giardino, Serena, Faraoni, Valerio
Format: Artikel
Sprache:eng
Schlagworte:
Mathematical analysis
Physics - General Relativity and Quantum Cosmology
Scalars
Tensors
Thermodynamics
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Beschreibung
Zusammenfassung:We refine and slightly enlarge the recently proposed first-order thermodynamics of scalar-tensor gravity to include gravitational scalar fields with timelike and past-directed gradients. The implications and subtleties arising in this situation are discussed and an exact cosmological solution of scalar-tensor theory in first-order thermodynamics is revisited in light of these results.
ISSN:2331-8422
DOI:10.48550/arxiv.2210.15348