Dynamical supersymmetry breaking from unoriented D-brane instantons

TL;DR

This paper investigates the non-perturbative dynamics of an unoriented Z_5-quiver GUT-like theory, revealing a line of supersymmetric vacua and a phase of dynamical supersymmetry breaking through gaugino condensation.

Contribution

It provides a detailed analysis of supersymmetry breaking mechanisms in unoriented D-brane instanton models with a specific gauge group and matter content.

Findings

Identification of a quantum deformed moduli space.

Explicit computation of the effective superpotential.

Demonstration of dynamical supersymmetry breaking phase.

Abstract

We study the non-perturbative dynamics of an unoriented Z_5-quiver theory of GUT kind with gauge group U(5) and chiral matter. At strong coupling the non-perturbative dynamics is described in terms of set of baryon/meson variables satisfying a quantum deformed constraint. We compute the effective superpotential of the theory and show that it admits a line of supersymmetric vacua and a phase where supersymmetry is dynamically broken via gaugino condensation.