Neutrino masses and oscillations in models with large extra dimensions

We discuss the profile of neutrino masses and mixings in models with large extra dimensions when right handed neutrinos are present in the branes alon g with the usual standard model particles. In these models, string scale mu st be bigger than 10(8) GeV to have desired properties for the neutrinos at low energies. The lightest neutrino mass is zero and there is oscillations to sterile neutrinos that are different from other models with the bulk ne utrino. (C) 1999 Published by Elsevier Science B.V. All rights reserved.