Speaker
Prof.
Alessandro Mirizzi
(Hamburg University)
Description
Supernova neutrinos experience self-induced flavor conversions associated with the neutrino-neutrino interactions in the deepest stellar regions.
In this context, we perferm the first numerical simulations of the self-induced neutrino evolution incluing the azimuthal angle of neutrino propagation as an explicit variable. Without enforcing the axial symmetry of the solution, we find that new suprising results can occur. In particular, a new flavor instability develops in normal mass hierarchy leading to large flavor conversions. Depending on the intial differences of the neutrino fluxes, these can lead to peculiar spectral splits
or to flavor decoherence of the neutrino ensemble.
Primary author
Prof.
Alessandro Mirizzi
(Hamburg University)
