The Uplifton

Abstract

Almost all proposals to construct de Sitter vacua with a small cosmological constant involve flux compactifications with stabilized moduli. These give AdS vacua, which are uplifted to de Sitter by adding antibranes in certain regions of the compactification manifold. However, antibranes are charged, singular and interact nontrivially with other ingredients of the compactification; this can invalidate the de Sitter construction. In this Letter, we construct a new ingredient for uplifting AdS solutions to de Sitter, which is neutral, smooth and horizonless, and therefore bypasses some of the problems of antibrane uplift.