GAUGE-THEORIES AND THE PHYSICS OF NEUTRINO MASS

The basic physics of neutrino mass is reviewed from a gauge theoretic point of view. Various extensions of the standard electroweak theory are considered, along with their implications for neutrino physics. These include the possibility of new signatures in laboratory experiments, both at high energy particle physics installations, as well as in nonaccelerator and nuclear physics experiments. Some of the implications of nonstandard neutrino properties in cosmology and astrophysics are also discussed, including relic neutrinos, nucleosynthesis, solar and supernova neutrinos.