Observational constraints on the generalized $\alpha$ attractor model

TL;DR

This paper investigates the generalized alpha attractor model as a candidate for explaining late-time cosmic acceleration, using observational data to constrain its parameters and behavior.

Contribution

It introduces a modified potential in the alpha attractor model that transitions from scaling freezing to thawing behavior, and provides observational constraints on this model.

Findings

Model fits observational data well

Constraints on model parameters are obtained

Behavior transitions from freezing to thawing in late universe

Abstract

We study the generalized $\alpha$ attractor model in the context of the late time cosmic acceleration. The model interpolates between the scaling freezing and thawing dark energy models. In the slow roll region, the original potential is modified whereas the modification ceases in the asymptotic region and the effective potential behaves as the quadratic one. In our setting, the field rolls slowly around the present epoch and mimics the scaling behavior in the future. We obtain observational constraints on the model parameters by using an integrated data base (SN+Hubble+BAO+CMB).