Neutrino Masses and Mixing in Models with Large Extra Dimensions and
  Localized Fermions
  Using a low-energy effective field theory approach, we study some properties
of models with large extra dimensions, in which quarks and leptons have
localized wave functions in the extra dimensions. We consider models with two
types of gauge groups: (i) the Standard-Model gauge group, and (ii) the
left-right symmetric (LRS) gauge group. Our main focus is on the lepton sector
of models with $n=2$ extra dimensions, in particular, neutrino masses and
mixing. We analyze the requisite conditions that the models must satisfy to be
in accord with data and present a solution for lepton wave functions in the
extra dimensions that fulfills these conditions. As part of our work, we also
present a new solution for quark wave function centers. Issues with
flavor-changing neutral current effects are assessed. Finally, we remark on
baryogenesis and dark matter in these models.
