Abstract :
In the wake of the SuperKamiokande announcement of atmospheric neutrino oscillations which favor the large mixing of νμ with ντ, there is considerable theoretical activity towards a possible understanding of the solar neutrino deficit also in terms of the mixing of νe with the other two neutrinos. A specific dynamical model is presented here for the first time which naturally chooses the large (small) mixing solution to atmospheric (solar) neutrino oscillations.
