Moduli stabilization and uplifting with dynamically generated F-terms

TL;DR

This paper proposes a method to stabilize moduli and uplift vacuum energy in string theory models using dynamical F-term supersymmetry breaking, achieving a zero cosmological constant with suppressed tunneling to AdS vacua.

Contribution

It introduces a supersymmetric approach to moduli stabilization and vacuum uplifting using metastable F-term breaking models, maintaining a TeV-scale gravitino mass and zero cosmological constant.

Findings

Achieves vacuum uplifting with metastable F-term models.

Suppresses tunneling to AdS vacua.

Discusses properties of soft terms in the observable sector.

Abstract

We use the F-term dynamical supersymmetry breaking models with metastable vacua in order to uplift the vacuum energy in the KKLT moduli stabilization scenario. The main advantage compared to earlier proposals is the manifest supersymmetric treatment and the natural coexistence of a TeV gravitino mass with a zero cosmological constant. We argue that it is generically difficult to avoid anti de-Sitter supersymmetric minima, however the tunneling rate from the metastable vacuum with zero vacuum energy towards them can be very suppressed. We briefly comment on the properties of the induced soft terms in the observable sector.