The Neutrino Suppression Scale from Large Volumes

We present an argument in which the scale \sim 0.1 eV associated with neutrino masses appears in a natural way from a class of (very) large volume compactifications, being tied to a supersymmetry scale of 10^3 GeV and a string scale of 10^{11} GeV. The masses are of Majorana type and there is no need for a see-saw mechanism. The suppression scale arises from a combination of TeV supersymmetry and locality of the Yukawa couplings. These kind of constructions appear naturally in Type IIB flux compactifications. However, the arguments that lead to this result rely only on a few geometrical features of the compactification manifold, and hence can be used independently of string theory