N=1 No-Scale Supergravity from IIB Orientifolds

TL;DR

This paper develops a no-scale supergravity model derived from IIB orientifolds with fluxes, involving D3 branes, by integrating out massive gravitino multiplets, resulting in a theory with specific moduli and gauge interactions.

Contribution

It introduces a novel no-scale supergravity framework from IIB orientifolds with fluxes, detailing the integration process of gravitino multiplets and the resulting moduli structure.

Findings

The effective theory is a no-scale supergravity model with specific moduli.

The model incorporates D3 branes with U(n) gauge interactions respecting no-scale structure.

The N=1 goldstino is identified as the fermionic partner of the 6-torus volume.

Abstract

We describe the low-energy effective theory of N=1 spontaneously broken supegravity obtained by flux-induced breaking in the presence of n D3 branes. This theory can be obtained by integrating out three massive gravitino multiplets in the hierarchical breaking N=4 to N=3 to N=2 to N=1. This integration also eliminates the IIB complex dilaton. The resulting theory is a no-scale supergravity model, whose moduli are the three chiral multiplets that correspond to the three radii of the three 2-tori in 6-torus, together with the 6n brane coordinates. The U(n) gauge interactions on the branes respect the no-scale structure,and the N=1 goldstino is the fermionic partner of the 6-torus volume.