$\alpha$-attractor inflation: Models and predictions

TL;DR

This paper analyzes $oldsymbol{ extalpha}$-attractor inflation models, comparing their predictions with recent cosmological data to refine model parameters and assess their viability in light of upcoming observations.

Contribution

It provides a comprehensive confrontation of exponential and polynomial $ extalpha$-attractor models with the latest cosmological data, deriving best-fit parameters and predictions.

Findings

Best-fit model parameters obtained from data.

Predictions for inflationary observables aligned with current measurements.

Assessment of model viability for upcoming cosmological observations.

Abstract

The $\alpha$-attractor models are some of the most interesting models of inflation from the point of view of upcoming observations in cosmology and also attractive from the point of view of supergravity. We confront representative models of exponential and polynomial $\alpha$-attractors with the latest cosmological data (Planck'18+BICEP2/Keck array) to obtain predictions and best fit values of model parameters. The analysis is done by making use of ModeChord and CosmoMC plugged together via PolyChord.