Journal
PHYSICS LETTERS B
Volume 790, Issue -, Pages 545-550Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2019.02.002
Keywords
Neutrino oscillations; Core-collapse supernova; Binary neutron star mergers
Funding
- Gravitation et physique fondamentale (GPHYS) of the Observatoire de Paris
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A dense neutrino medium could experience self-induced flavor conversions on relatively small scales in the presence of the so-called fast flavor conversion modes. Owing to the fact that fast conversion scales could be much smaller than the ones of the traditional collective neutrino oscillations, it has been speculated that fast modes could lead to some sort of flavor decoherence/equilibrium. We study the evolution of fast modes in the nonlinear regime and we show that not only fast modes are not guaranteed to lead to flavor equilibrium, but also they could lead to some sort of collective neutrino oscillations but on scales determined by neutrino number density. For the v(e) dominated case, we observe large amplitude collective oscillations, whereas a sort of flavor stabilization is reached for the (v) over bar (e) dominated case. (C) 2019 The Authors. Published by Elsevier B.V.
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