Nature of entropy in a scalar-tensor theory of gravity

Authors

ONUR SIĞINÇ
MUSTAFA SALTI
HİLMİ YANAR
OKTAY AYDOĞDU

Abstract

This work is devoted to studying the generalized nature of the entropy function in a specific form of the scalar-tensor-vector (STeVe) theory of gravity for the Friedmann-Lemaitre-Robertson-Walker (FLRW) spacetime in the state of thermal equilibrium. For this purpose, we define an equilibrium picture of thermodynamics by making use of a suitable set of the dark energy density and dark pressure descriptions, which defines an energy-momentum tensor obeying the local energy conservation law. Furthermore, we also discuss our results numerically in order to get additional implications.

DOI

10.3906/fiz-1712-12

Keywords

Thermodynamics, entropy, modified gravity, cosmology

First Page

621

Last Page

630

Recommended Citation

SIĞINÇ, ONUR; SALTI, MUSTAFA; YANAR, HİLMİ; and AYDOĞDU, OKTAY (2018) "Nature of entropy in a scalar-tensor theory of gravity," Turkish Journal of Physics: Vol. 42: No. 6, Article 1. https://doi.org/10.3906/fiz-1712-12
Available at: https://journals.tubitak.gov.tr/physics/vol42/iss6/1