It is often the case that naive introduction of the messenger sector to supersymmetry breaking models causes the supersymmetry restoration. We discuss a possibility of stabilizing the supersymmetry broken vacuum by the gravitational interaction.

We show that for the simplest models of gauge mediated supersymmetry breaking, including all existing models, the true vacuum will not preserve QCD if it communicates supersymmetry breaking to the visible sector. We show that the desired supersymmetry breaking color preserving vacuum can nonetheless be stable cosmologically, but only if certain couplings are sufficiently small. We also present ...

Unbroken supersymmetry requires degeneracy between Bose and Fermi degrees of f reedom [1]. Since no such degeneracy is actually observed, any supersymmetr ic model of nature must include a mechanism for supersymmetry breaking [2]. The scale of this breaking may be of order the Planck m a s s in which case only local supersymmetry (supergravity) is of relevance to the real world. If this is the ...