Many-body effects of collective neutrino oscillations

Understand

Collective neutrino oscillations are critical to determine the neutrino flavor content, which has striking impacts on core-collapse supernovae or compact binary merger remnants.

• It is a challenging many-body problem that so far has been mainly studied at the mean-field approximation.
• We use a setup that captures the relevant physics and allows exact solution for a large number of neutrinos.
• We, for the first time, find quantitative deviation from the mean-field evolution due to many-body decoherence in flavor space.