O'R Inflation in $F$-term Supergravity

TL;DR

This paper presents a class of small-field inflation models within $F$-term supergravity using O'Raifeartaigh superpotentials, addressing the $ ext{eta}$ problem and generalizing hybrid inflation.

Contribution

It introduces a broad class of small-field inflation models in $F$-term supergravity employing O'Raifeartaigh superpotentials, with the moduli acting as the inflaton.

Findings

Realization of small-field inflation models in supergravity

Addressing the $ ext{eta}$ problem in $F$-term inflation

Generalization of hybrid inflation models

Abstract

The supersymmetric realization of inflation in $F$-term supergravity is usually plagued by the well known "$\eta$" problem. In this paper, a broad class of small-field examples is realized by employing general O' Raifeartaigh superpotentials, where the moduli is identified as the massless inflaton. For illustration we present the simplest example in detail, which can be considered as a generalization of hybrid inflation.