Collective Flavor Oscillations Of Supernova Neutrinos and r-Process Nucleosynthesis

Understand

Neutrino-neutrino interactions inside core-collapse supernovae may give rise to collective flavor oscillations resulting in swap between flavors.

• These oscillations depend on the initial energy spectra, and relative fluxes or relative luminosities of the neutrinos.
• It has been observed that departure from energy equipartition among different flavors can give rise to one or more sharp spectral swap over energy, termed as splits.
• We study the occurrence of splits in the neutrino and antineutrino spectra, varying the initial relative fluxes for different models of initial energy spectrum, in both normal and inverted hierarchy.