The Runaway Quiver

TL;DR

The paper critiques certain string theory models claiming to break supersymmetry, revealing they instead exhibit runaway potentials leading to supersymmetric vacua at infinite field values, challenging previous assumptions.

Contribution

It identifies a common misconception in string theory models of supersymmetry breaking, showing the presence of runaway directions rather than genuine breaking.

Findings

Runaway potentials are prevalent in some string theory models.

Supersymmetry is not truly broken but approached at infinite field expectation values.

Runaway directions appear as tadpoles across the entire moduli space.

Abstract

We point out that some recently proposed string theory realizations of dynamical supersymmetry breaking actually do not break supersymmetry in the usual desired sense. Instead, there is a runaway potential, which slides down to a supersymmetric vacuum at infinite expectation values for some fields. The runaway direction is not on a separated branch; rather, it shows up as a"tadpole" everywhere on the moduli space of field expectation values.