Neutrinos in Stochastic Media: From Sun to Core-Collapse Supernovae

Abstract

Recent work on neutrino propagation in stochastic media and its implications for the Sun and core-collapse supernovae are reviewed. It is shown that recent results from Sudbury Neutrino Observatory and SuperKamiokande combined with a best global fit value of $\delta m^2=5\times 10^{-5}$ eV${}^2$ and ${\tan }^2\theta =0.3$ rule out solar electron density fluctuations of a few percent or more. It is argued that solar neutrino experiments may be able to rule out even smaller fluctuations in the near future.

Comments: 4 pages, to be published in the proceedings of the International Nuclear Physics Conference (INPC 2001): Nuclear Physics And The 21st Century, 30 Jul - 3 Aug 2001, Berkeley, California