An update on moduli stabilization with antibrane uplift

TL;DR

This paper examines the effects of antibrane uplift on moduli stabilization in warped compactifications, revealing significant supersymmetry breaking contributions from a light complex structure field and implications for the de Sitter swampland conjecture.

Contribution

It analyzes the impact of antibrane uplift on a light complex structure field and its role in supersymmetry breaking within warped compactifications.

Findings

The light complex structure field contributes significantly to supersymmetry breaking after uplift.

Conditions for the field to be heavier than the Kähler modulus are established.

Results are consistent with the de Sitter swampland conjecture for relevant parameters.

Abstract

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 K\"ahler 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.