Intermediate Scale Inflation and Metastable Supersymmetry Breaking

TL;DR

This paper explores a low-scale supersymmetry breaking scenario within the ISS framework by coupling it to a low-scale inflationary sector, addressing initial condition issues and identifying a viable supersymmetry breaking scale range.

Contribution

It introduces a gravitational coupling approach preserving R-symmetry to achieve low-scale supersymmetry breaking in the ISS model, with implications for gauge mediation.

Findings

Supersymmetry breaking scale range: 10^4 to 10^8 GeV

Viable hilltop inflation phase identified

Initial condition problem addressed

Abstract

We investigate the possibility of obtaining a low scale of supersymmetry breaking within the ISS framework using a metastable vacuum. This is achieved by introducing an R-symmetry preserving gravitational coupling of the ISS sector to a relatively low scale inflationary sector. We find the allowed range for the supersymmetry breaking scale, 10^4 GeV < \mu < 10^8 GeV, which is low enough to be amenable to gauge supersymmetry breaking mediation. This scenario is based upon a so-called hilltop inflation phase whose initial condition problem is also addressed.