D-Terms and Supersymmetry Breaking from Branes

TL;DR

This paper explores how classical brane interactions in string theory induce D-terms and non-canonical Kähler potentials, affecting metastable supersymmetry breaking and clarifying the phase structure of ISS models.

Contribution

It demonstrates that brane interactions produce specific D-terms and Kähler potentials in the effective theory, linking string theory UV completions to supersymmetry breaking models.

Findings

Brane interactions generate non-canonical Kähler potentials.

String theory allows computation of non-renormalizable terms.

Clarifies the phase structure of ISS-type models.

Abstract

Metastable supersymmetry breaking configurations of D-branes and NS5-branes in string theory often owe their existence to classical gravitational interactions between the branes. We show that in the effective theory of the light fields, these interactions give rise to a non-canonical K\"ahler potential and other D-terms. String theory provides a UV completion in which these non-renormalizable terms can be computed. We use these observations to clarify the relation between the phase structure of ISS-type models and their brane realizations.