Intermediate Coupling Regime in Dilatonic $f(R,T)$ Inflationary Universe
General Relativity and Quantum Cosmology
2025-02-19 v1 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Abstract
In the present work we study cosmology in dilatonic gravity to address the inflationary phase of the early Universe. As usual, in dilatonic gravity the scalar potential assumes the exponential form. However, this potential is not good enough to be in accord with the Planck 2018 data. More strikingly, the generalized -exponential cannot take this into account either. It is just the presence of the dilatonic sector, in the intermediate coupling regime, that can help the theory to be in full accord with the observational data.
Keywords
Cite
@article{arxiv.2502.12720,
title = {Intermediate Coupling Regime in Dilatonic $f(R,T)$ Inflationary Universe},
author = {Francisco A. Brito and Carlos H. A. B. Borges and Jose A. V. Campos and Francisco G. Costa},
journal= {arXiv preprint arXiv:2502.12720},
year = {2025}
}
Comments
18 pages, 9 figures, 3 tables, Published in the Universe