Nature of entropy in a scalar-tensor theory of gravity

Authors

ONUR SIĞINÇ
MUSTAFA SALTI
HİLMİ YANAR
OKTAY AYDOĞDU

DOI

10.3906/fiz-1712-12

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.

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