Simple Stringy Dynamical SUSY Breaking

TL;DR

This paper introduces straightforward string models that achieve dynamical supersymmetry breaking through D-brane instanton effects, avoiding complex gauge dynamics, and deriving classic SUSY-breaking models from specific D-brane configurations.

Contribution

It presents novel string constructions that realize well-known SUSY-breaking models via D-branes at singularities, highlighting a new mechanism for small-scale SUSY breaking.

Findings

D-brane instantons generate exponentially small SUSY-breaking scales.

Classic SUSY-breaking models are realized from D-branes at singularities.

The models do not rely on non-Abelian gauge dynamics.

Abstract

We present simple string models which dynamically break supersymmetry without non-Abelian gauge dynamics. The Fayet model, the Polonyi model, and the O'Raifeartaigh model each arise from D-branes at a specific type of singularity. D-brane instanton effects generate the requisite exponentially small scale of supersymmetry breaking.