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Modelling Quintessential Inflation in Palatini-Modified Gravity

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Published
Article numbere57
<mark>Journal publication date</mark>5/04/2022
<mark>Journal</mark>Galaxies
Issue number2
Volume10
Number of pages14
Publication StatusPublished
<mark>Original language</mark>English

Abstract

We study a model of quintessential inflation constructed in R2-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 of the model parameters. Predictions of the characteristics of dark energy will be tested by observations in the near future, while contrasting with existing observations provides insights on the modified gravity background, such as the value of the non-minimal coupling and its running.