SUSY breaking after inflation in supergravity with inflaton in a massive vector multiplet

TL;DR

This paper introduces a class of supergravity models with a massive vector multiplet as the inflaton, capable of achieving inflation and spontaneous SUSY breaking in Minkowski space regardless of inflationary parameters.

Contribution

It presents a new model framework for supergravity inflation with inflaton in a massive vector multiplet and flexible SUSY breaking post-inflation.

Findings

Models accommodate any inflationary parameters $n_s$ and $r$.

Models allow SUSY breaking at any scale.

Suitable for inflationary model building in supergravity.

Abstract

We propose a limited class of models, describing interacting chiral multiplets with a non-minimal coupling to a vector multiplet, in curved superspace of $N=1$ supergravity. Those models are suitable for the inflationary model building in supergravity with inflaton assigned to a massive vector multiplet and spontaneous SUSY breaking in Minkowski vacuum after inflation, for any values of the inflationary parameters $n_s$ and $r$, and any scale of SUSY breaking.