Supersymmetry and Inflation

TL;DR

This paper discusses how supersymmetry enhances the naturalness of inflationary models, especially in multifield scenarios with varying Hubble parameters, addressing some limitations of traditional inflation models.

Contribution

It introduces supersymmetry as a framework for developing more natural inflation models, with a focus on multifield approaches across different Hubble regimes.

Findings

Supersymmetry improves the theoretical consistency of inflation models.

Multifield models with supersymmetry can operate effectively at various Hubble scales.

The approach offers solutions to some issues faced by conventional inflationary theories.

Abstract

Inflation is a promising solution to many problems of the standard Big-Bang cosmology. Nevertheless, inflationary models have proved less compelling. In this chapter, we discuss why supersymmetry has led to more natural models of inflation. We pay particular attention to multifield models, both with a high and a low Hubble parameter.