---
abstract: 'We analyse the breakdown of supersymmetry in an ISS model in the presence of gravity, under the requirement that the cosmological constant vanishes dynamically. The gravitational backreaction is calculated in the metastable minimum and, in conjuction with the condition $V=0$, this is shown to generate non-zero F-terms for the squarks. Once the squarks are coupled to the messenger sector, a gauge mediation scheme is realised and it leads to a distinctive soft spectrum, with a two order of magnitude split between the gaugino and the soft scalar masses.'
author:
- |
    **Z. Lalak, O. J. Eyton-Williams\
    Institute of Theoretical Physics, University of Warsaw, 00-681 Warsaw, Poland\
    **
title: |
    \
    **Supersymmetry breaking in ISS coupled to gravity**
---

Introduction {#sec:Intro}
============

In this letter we analyse the meta-stable point of a simple Intriligator, Seiberg and Shih (ISS) [@Intriligator:2006dd] model, within the framework of supergravity. This allows us to cancel the cosmological constant, which we opt to do by the simplest possible method: adding a constant, $W_0$, to the superpotential. This is sufficient to generate a physically reasonable gravitino mass and balance the new negative contribution to the potential against the original positive contribution coming from the ISS potential.

