Three-flavour effects and CP- and T-violation in neutrino oscillations

Abstract

Some theoretical aspects of 3-flavour (3f) neutrino oscillations are reviewed. These include: general properties of 3f oscillation probabilities; matter effects in \nu_\mu \leftrightarrow \nu_\tau oscillations; 3f effects in oscillations of solar, atmospheric, reactor and supernova neutrinos and in accelerator long-baseline experiments; CP and T violation in neutrino oscillations in vacuum and in matter, and the problem of U_{e3}.

Comments: Invited talk given at the Nobel Symposium 129 -- Neutrino Physics, Haga Slott, Enkoping, Sweden, August 19-24, 2004. v2: minor improvements to the text and fig. 3