The LVS parametric tadpole constraint

A bstract The large volume scenario (LVS) for de Sitter compactifications of the type IIB string is, at least in principle, well protected from various unknown corrections. reason is that, by construction, Calabi-Yau exponentially large. However, as has recently been emphasised, practice most explicit models are rather on border parametric control. We identify and quantify parametrically what we believe to be main issue behind this difficulty. Namely, a implies shallow AdS minimum hence small uplift. latter, if it relies an anti-D3 throat, requires negative tadpole. As our result, provide simple formula tadpole order control dangerous fundamental ingredients parameters specifying desired quality comment interplay between constraint conjecture. also discuss directions future work which could lead LVS constructions satisfying with better control, further challenges that may exist LVS. Our then represents very concrete challenge searches understanding relevant geometries.