Models of Neutrino Masses and Mixings: a Progress Report

Abstract

We present some recent developments on model building for neutrino masses and mixings. In particular, we review tri-bimaximal neutrino mixing derived from discrete groups, notably A4. We discuss the problems encountered with extending the symmetry to the quark sector and with Grand Unification.

Comments: Talk presented at the XII International Workshop on Neutrino Telescopes, March 6-9, 2007, Venice, Italy. 23 pages, 2 figures