An update on moduli stabilization with antibrane uplift

It was recently shown that in warped compactifications based on a Klebanov-Strassler throat there is a light complex structure field, governing the size of the throat and the redshift at its tip. We show that after uplift of the cosmological constant by an anti-D3 brane at the tip of the throat, the contribution to supersymmetry breaking coming from the new light field is large. We work out the mass scales, in particular the condition for this field to be heavier than the Kahler modulus. We check that for the range of parameters relevant for the destabilization we find agreement with de Sitter swampland conjecture. Adding matter fields on distant branes, we discuss the effects on supersymmetry breaking in the observable sector. A hierarchically small scale of supersymmetry breaking translates generically into large values of localized D3 charges in the manifold.

Automated summary

This study shows the impact of a light complex structure field in warped compactifications based on a Klebanov-Strassler throat on the cosmological constant. Additionally, it reveals that the contribution to supersymmetry breaking from this new light field is significant after uplifting the cosmological constant by an anti-D3 brane. Furthermore, it discusses how a hierarchically small scale of supersymmetry breaking leads to large values of localized D3 charges in the manifold.