Modelling Quintessential Inflation in Palatini Modified Gravity
General Relativity and Quantum Cosmology
2022-04-21 v2 Cosmology and Nongalactic Astrophysics
High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
We study a model of quintessential inflation constructed in modified gravity with a non-minimally coupled scalar field, in the Palatini formalism. Our non-minimal inflaton field is characterised by a simple exponential potential. We find that successful quintessential inflation can be achieved with no fine-tuning on the model parameters. Predictions on the characteristics of dark energy will be tested by observations in the near future, while contrast with existing observations provides insights on the modified gravity background, such as the value of the non-minimal coupling and its running.
Cite
@article{arxiv.2203.05424,
title = {Modelling Quintessential Inflation in Palatini Modified Gravity},
author = {Konstantinos Dimopoulos and Alexandros Karam and Samuel Sánchez López and Eemeli Tomberg},
journal= {arXiv preprint arXiv:2203.05424},
year = {2022}
}
Comments
20 pages, 7 figures, 1 table; published version