Local string models of soft supersymmetry breaking

TL;DR

This paper investigates how soft supersymmetry breaking occurs in local type II string theory models with branes and fluxes, focusing on the role of magnetic fluxes as auxiliary fields and their impact on SUSY breaking patterns.

Contribution

It introduces a framework for analyzing soft SUSY breaking in local string models using spurion superfields and explores the SUSY breaking pattern from N=2 to N=0.

Findings

Identification of fields responsible for soft SUSY breaking terms.

Analysis of SUSY breaking pattern in local models.

Reevaluation of Dijkgraaf-Vafa conjecture in softly broken SUSY gauge theories.

Abstract

We study soft supersymmetry breaking in local models of type II string theory compactifications with branes and fluxes. In such models, magnetic fluxes can be treated as auxiliary fields in N=2 SUSY multiplets. These multiplets appear as ``spurion superfields'' in the low-energy effective action for the local model. We discuss the pattern of SUSY breaking from N=2 to N=1 to N=0 in these models, and then identify the fields leading to soft SUSY breaking terms in various examples. In the final section, we reconsider arguments for the Dijkgraaf-Vafa conjecture in gauge theories with softly broken supersymmetry.