2008/10/08 by Georg G. Raffelt · 3 citations
Chemistry · Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Molecular Spectroscopy and Structure #Neutrino Physics Research #hep-ph
paper · pdf · doi:10.1103/physrevd.78.125015
published as Phys.Rev.D78:125015,2008 · 9 pages, 4 figures
arxiv created 2008/10/08 · openalex publication_date 2008/12/12 · arxiv updated 2010/04/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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 \ensuremathΔm2/2E. This libration persists in the limit of an arbitrarily large neutrino density where one would have expected synchronized flavor oscillations.