N=3 Warped Compactifications

TL;DR

This paper explores warped compactifications in string theory with orientifolds and three-form fluxes, revealing models with unexpected N=3 supersymmetry and analyzing their construction, low-energy physics, and moduli space structure.

Contribution

It introduces specific warped compactification models exhibiting N=3 supersymmetry, a rare feature, and investigates their global moduli space and BPS spectrum.

Findings

Identification of models with N=3 supersymmetry

Analysis of the moduli space structure

Insights into the BPS spectrum and low-energy physics

Abstract

Orientifolds with three-form flux provide some of the simplest string examples of warped compactification. In this paper we show that some models of this type have the unusual feature of D=4, N=3 spacetime supersymmetry. We discuss their construction and low energy physics. Although the local form of the moduli space is fully determined by supersymmetry, to find its global form requires a careful study of the BPS spectrum.