Self-induced parametric resonance in collective neutrino oscillations

Abstract

We identify a generic new form of collective flavor oscillations in dense neutrino gases that amounts to a self-induced parametric resonance. It occurs in a homogeneous and isotropic ensemble when a range of neutrino modes is prepared in a different flavor than the neighboring modes with lower and higher energies. The flavor content of the intermediate spectral part librates relative to the other parts with a frequency corresponding to a typical Delta m^2/2E. This libration persists in the limit of an arbitrarily large neutrino density where one would have expected synchronized flavor oscillations.

9 pages, 4 figures

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Cited by in corpus (28)

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• Multiple Spectral Splits of Supernova Neutrinos
• Linearized flavor-stability analysis of dense neutrino streams
• Invariants of Collective Neutrino Oscillations
• Neutrino flavour transformation in supernovae
• Effect of Transition Magnetic Moments on Collective Supernova Neutrino Oscillations
• Nonstandard neutrino-neutrino refractive effects in dense neutrino gases
• Spurious instabilities in multiangle simulations of collective flavor conversion
• Decoherence and oscillations of supernova neutrinos
• Neutrino flavor pendulum in both mass hierarchies
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• Flavor stability analysis of dense supernova neutrinos with flavor-dependent angular distributions
• Symmetries in collective neutrino oscillations
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