Runaway potentials and a massive goldstino

Abstract

We study N=1 globally supersymmetric theories on runaway backgrounds arising from scalar potentials with a slope characterized by a scale $M=|V/V^{\prime }|$. We find that, under mild assumptions, there always exists a massive goldstino in the low energy effective theory. In the simplest models the effective mass of such a fermion is of order $\sqrt{V}/M$, or of order $V/M^2\mu$ when a seesaw mechanism takes place, where $\mu$ is a scale that characterizes the masses of other heavy fermions.

arXiv comment10 pages, v2 accepted in PRD

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• Multi-field Inflation in High-Slope Potentials
• On the F-term problem and quintessence supersymmetry breaking