Jointly modelling Cosmic Inflation and Dark Energy

TL;DR

This paper explores models that unify cosmic inflation and dark energy using a single scalar field, presenting two successful models within specific theoretical frameworks.

Contribution

It introduces two explicit models of quintessential inflation within the contexts of α-attractors and Palatini modified gravity, advancing unified cosmological modeling.

Findings

Successful models of quintessential inflation are demonstrated.

Models fit observational data for both inflation and dark energy.

Theoretical frameworks used are α-attractors and Palatini gravity.

Abstract

Quintessential inflation utilises a single scalar field to account for the observations of both cosmic inflation and dark energy. The requirements for modelling quintessential inflation are described and two explicit successful models are presented in the context of $\alpha$-attractors and Palatini modified gravity.