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:	General relativity and gravitation 2023, Vol.55 (3), p.47-47, Article 47
Hauptverfasser:	Giusti, Andrea, Giardino, Serena, Faraoni, Valerio
Format:	Artikel
Sprache:	eng
Schlagworte:	Astronomy Astrophysics and Cosmology Classical and Quantum Gravitation Differential Geometry Gravity Mathematical analysis Mathematical and Computational Physics Physics Physics and Astronomy Quantum Physics Relativity Theory Scalars Tensors Theoretical 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:	0001-7701 1572-9532
DOI:	10.1007/s10714-023-03095-7