Non-perturbative SQCD Superpotentials from String Instantons

TL;DR

This paper derives non-perturbative superpotentials in supersymmetric QCD using string theory instantons, providing explicit calculations for specific gauge groups and flavor configurations.

Contribution

It presents a novel derivation of SQCD superpotentials from string theory instantons, extending to symplectic groups and specific flavor numbers.

Findings

Explicit superpotential derivation for Nf=Nc-1 in SQCD

Extension to symplectic gauge groups with Nf=Nc

Connection between string instantons and field theory superpotentials

Abstract

The Affleck-Dine-Seiberg instanton generated superpotential for SQCD with Nf=Nc-1 flavours is explicitly derived from a local model of engineered intersecting D6-branes with a single E2-instanton. This computation extends also to symplectic gauge groups with Nf=Nc flavours.