# NEUTRINO2010, XXIV International Conference on Neutrino Physics and Astrophysics, Athens, GREECE

14-19 June 2010
Europe/Athens timezone

## Three-flavor collective oscillations of supernova neutrinos

Not scheduled
Aithousa Mitropoulos ()

### Aithousa Mitropoulos

Megaron, Athens - Greece

### Speaker

Alexander Friedland (Los Alamos National Laboratory)

### Description

Coherent forward scattering of neutrinos off each other leads to complex collective neutrino oscillations inside a supernova. We explore this phenomenon during the cooling stage of the explosion. Two- and three-flavor calculations of the oscillations are shown to give strikingly different results, especially for the inverted mass hierarchy. Analysis shows that the 2-flavor evolution trajectory is unstable in the 3-flavor space. Additionally, the 3-flavor evolution is shown to be partially non-adiabatic, resulting in a mixed'' spectrum. Our results could impact the interpretation of the future galactic supernova signal, the analysis of the r-process nucleosynthesis, and the predictions of the diffuse supernova neutrino background.

### Summary

Based on 1001.0996 (submitted to PRL) + work in preparation

### Primary author

Alexander Friedland (Los Alamos National Laboratory)

### Presentation Materials

There are no materials yet.