Self-induced parametric resonance in collective neutrino oscillations

Details Self-induced parametric resonance in collective neutrino oscillations Self-induced parametric resonance in collective neutrino oscillations

2008-10-08

arxiv.org/abs/0810.1407v1

Phys.Rev.D78:125015,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 4 figures

Scientific paper

10.1103/PhysRevD.78.125015

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.

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