WEAKLY-coupled IIA Flux Compactifications

TL;DR

This paper explores type IIA string theory compactifications on Calabi-Yau manifolds, demonstrating moduli stabilization in non-supersymmetric AdS vacua with potential for uplift to de Sitter space and implications for TeV-scale supersymmetry breaking.

Contribution

It presents a new class of weakly-coupled IIA flux compactifications with stabilized moduli and potential for realistic phenomenology, including inflation and supersymmetry breaking.

Findings

Stable non-supersymmetric AdS vacua with exponentially small string coupling.

Potential uplift to de Sitter vacua using D6 branes.

Realization of complex-structure modular inflation.

Abstract

We study compactifications of type IIA string theory on Calabi-Yau manifolds that are mirror to a subset of the type IIB LARGE-volume models. A combination of flux, alpha' corrections and non-perturbative effects stabilises the moduli in a non-supersymmetric AdS vacuum. This vacuum has the feature that the (ten-dimensional) string coupling is exponentially small which can naturally lead to a TeV supersymmetry breaking scale with an intermediate string scale. The AdS vacuum can be uplifted to a dS one through the introduction of D6 branes, and complex-structure modular inflation can be realised.