Moduli Stabilization in Type IIB Orientifolds (I)

TL;DR

This paper explores flux quantization and moduli stabilization in toroidal Type IIB orientifolds, analyzing their vacuum structure, moduli spaces, and non-perturbative effects to understand stable minima.

Contribution

It provides a detailed analysis of moduli spaces, effective actions, and criteria for stable vacua in Type IIB orientifold models, including non-perturbative superpotential origins.

Findings

Criteria for stable supersymmetric minima derived

Moduli spaces and effective actions characterized

Insights into non-perturbative superpotentials obtained

Abstract

We discuss flux quantization and moduli stabilization in toroidal type IIB Z_N - or Z_N x Z_M -orientifolds, focusing mainly on their orbifold limits. After presenting a detailed discussion of their moduli spaces and effective actions, we study the supersymmetric vacuum structure of these models and derive criteria for the existence of stable minima. Furthermore, we briefly investigate the models away from their orbifold points and comment on the microscopic origin of their non-perturbative superpotentials.