Stabilizing Antibrane Pseudomoduli
(English)Manuscript (preprint) (Other academic)
In a KKLT compactification, an anti-D3-brane at the tip of a warped deformed conifold region plays the crucial role of contributing positive vacuum energy. This antibrane also gives rise to light moduli, corresponding to angular motion around the tip. Following the work of Aharony, Antebi, and Berkooz, we characterize the leading effects due to compactification that lift these potentially dangerous pseudomoduli.We show that the dominant contribution to the anti-D3-brane potential arises from nonperturbative effects stabilizing the K\"ahler moduli. In ten-dimensional supergravity, this contribution is mediated by perturbations of three-form flux. Incorporating these flux perturbations, we compute the leading contribution to the potential for angular motion of the anti-D3-brane. We show that the resulting mass is parametrically larger than that obtained in prior work. However, we give a conclusive demonstration that bulk effects cannot stabilize the antibrane moduli above the IR scale without severe fine tuning.
Astronomy, Astrophysics and Cosmology
Research subject Theoretical Physics
IdentifiersURN: urn:nbn:se:su:diva-74927OAI: oai:DiVA.org:su-74927DiVA: diva2:512948