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  • 2012.06831

    Rights statement: © 2021 American Physical Society

    Accepted author manuscript, 1.64 MB, PDF document

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Quintessential inflation in Palatini f(R) gravity

Research output: Contribution to journalJournal articlepeer-review

Published
Article number043533
<mark>Journal publication date</mark>15/02/2021
<mark>Journal</mark>Physical Review D
Issue number4
Volume103
Number of pages26
Publication StatusPublished
<mark>Original language</mark>English

Abstract

We investigate in detail a family of quintessential inflation models in the context of R+R^2 Palatini modified gravity. We find that successful inflation and quintessence are obtained with an inflaton scalar potential that is approximately quadratic in inflation and inverse quartic in quintessence. We show that corrections for the kination period due to Palatini modified gravity are subdominant, while the setup does not challenge constraints on modified gravity from Solar System observations and microscopic experiments, in contrast to the metric case. We obtain concrete predictions regarding primordial tensors to be probed in the near future.

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© 2021 American Physical Society