DESY/Hamburg U. String Theory Seminar

The Tadpole Problem

by Mariana Grana (IPhT Saclay)

SR 2 (Building 2a)

SR 2

Building 2a



One of the biggest problems in string compactifications is the large number of massless fields associated to deformations of the internal geometry.  These “moduli” get masses from fluxes wrapping non-trivial cycles on the manifold. Fluxes have an associated charge, which on a compact manifold has to satisfy tadpole cancelation conditions.  The tadpole conjecture proposes that the charge induced by the fluxes needed to stabilise a large number of moduli grows linearly with the number of moduli. In this talk I will explain the conjecture, present its motivation, supporting evidence and consequences.

Zoom link:
Meeting ID: 692 9074 0393
Passcode: 58954518