Superconformal generalizations of the Starobinsky model

TL;DR

This paper develops a superconformal supergravity framework that generalizes the Starobinsky inflation model through spontaneous symmetry breaking, offering a new theoretical foundation for supergravity-based cosmological models.

Contribution

It introduces a superconformal theory that, after symmetry breaking, yields a supergravity extension of the Starobinsky model, linking conformal invariance with inflationary cosmology.

Findings

Superconformal theory reproduces Starobinsky model

Spontaneous symmetry breaking leads to supergravity generalization

Provides a consistent supergravity framework for inflation

Abstract

We find a way to represent the Starobinsky model in terms of a simple conformally invariant theory with spontaneous symmetry breaking. We also present a superconformal theory, which, upon spontaneous breaking of the superconformal symmetry, provides a consistent supergravity generalization of the Starobinsky model.