N=4 supergravity for Type IIB on T^6/Z_2 in presence of fluxes

TL;DR

This paper constructs four-dimensional gauged supergravity models derived from Type IIB string theory compactified on T^6/Z_2 with fluxes, focusing on symplectic embedding, gauge group selection, and supersymmetry preservation.

Contribution

It provides a detailed analysis of the symplectic embedding of the U-duality group and the gauge group structure in flux compactifications of Type IIB supergravity.

Findings

Explicit construction of gauged supergravity models with fluxes

Analysis of scalar potential and supersymmetry conditions

Identification of gauge group from fluxes and branes

Abstract

We report on the construction of four dimensional gauged supergravity models that can be interpreted as type IIB orientifold compactification in presence of 3-form fluxes and D3--branes. We mainly address our attention to the symplectic embedding of the U-duality group of the theory and the consequent choice of the gauge group, whose four dimensional killing vectors are the remnant of the ten dimensional fluxes. We briefly discuss the structure of the scalar potential arising from the gauging and the properties of the killing vectors in order to preserve some amount of supersymmetry.