Hybrid Inflation in Quasi-minimal Supergravity with Monotonic Inflationary Potentia

TL;DR

This paper demonstrates how to realize supersymmetric hybrid inflation with a spectral index around 0.96-0.97 within quasi-minimal supergravity, ensuring a monotonic potential and addressing initial condition issues.

Contribution

It introduces a model of hybrid inflation in quasi-minimal supergravity with a monotonic potential and consistent spectral index, solving initial condition problems.

Findings

Achieves spectral index $n_s \,\approx\, 0.96-0.97$

Ensures inflationary potential is monotonic

Addresses initial condition challenges

Abstract

We show how supersymmetric hybrid inflation with scalar spectral index $n_{\rm s}\simeq 0.96 - 0.97$ is realized in the context of quasi-minimal supergravity if we insist that the inflationary potential not exhibit any local minima. We also address the problem of the initial conditions for both monotonic and non-monotonic inflationary potentials.