Flipped SU(5) From D-branes With Type IIB Fluxes

TL;DR

This paper constructs flipped SU(5) GUT models within Type IIB flux compactifications on orientifolds, demonstrating moduli stabilization, supersymmetry breaking, and realistic Yukawa couplings with potential for realistic particle physics models.

Contribution

It presents a novel construction of flipped SU(5) GUT models using Type IIB flux vacua with stabilized moduli and realistic Yukawa couplings, including a complete Higgs sector.

Findings

Successfully stabilizes complex structure moduli and dilaton with fluxes.

Achieves a three-generation flipped SU(5) model with Higgs sector.

Demonstrates supersymmetry breaking via fluxes and presence of realistic Yukawa couplings.

Abstract

We construct flipped SU(5) GUT models as Type IIB flux vacua on $\Z_2\times \Z_2$ orientifolds. Turning on supergravity self-dual NSNS and RR three-form fluxes fixes the toroidal complex structure moduli and the dilaton. We give a specific example of a three-generation flipped SU(5) model with a complete Higgs sector where supersymmetry is softly broken by the supergravity fluxes in the closed string sector. All of the required Yukawa couplings are present if global U(1) factors resulting from a generalized Green-Schwarz mechanism are broken spontaneously or by world-sheet instantons. In addition, the model contains extra chiral and vector-like matter, potentially of mass $\mathcal{O}(M_{string})$ via trilinear superpotential couplings.