Modelling Quintessential Inflation in Palatini-Modified Gravity

Dimopoulos, Konstantinos and Karam, Alexandros and López, Samuel Sánchez and Tomberg, Eemeli (2022) Modelling Quintessential Inflation in Palatini-Modified Gravity. Galaxies, 10 (2). ISSN 2075-4434

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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.

Item Type:
Journal Article
Journal or Publication Title:
Galaxies
Subjects:
ID Code:
168670
Deposited By:
Deposited On:
12 Apr 2022 10:40
Refereed?:
Yes
Published?:
Published
Last Modified:
02 Jul 2022 00:33