Single-field $\alpha$-attractors

TL;DR

This paper introduces a new class of single-field $oldsymbol{eta}$-attractor models in supergravity that align well with current cosmological data and can also describe dark energy and supersymmetry breaking.

Contribution

It generalizes the single-field GL inflation model to a broader class of $oldsymbol{eta}$-attractors applicable for $0<eta \,\lesssim 1$, and extends to include dark energy and supersymmetry breaking.

Findings

Models fit current cosmological observations

Generalized models describe inflation, dark energy, and supersymmetry breaking

Provides a simple supergravity framework for unified cosmological phenomena

Abstract

I describe a simple class of $\alpha$-attractors, generalizing the single-field GL model of inflation in supergravity. The new class of models is defined for $0<\alpha \lesssim 1$, providing a good match to the present cosmological data. I also present a generalized version of these models which can describe not only inflation but also dark energy and supersymmetry breaking.