Physical Review Letters
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Quasilinear Theory of Fast Flavor Instabilities
Author(s): Damiano F. G. Fiorillo and Georg G. Raffelt
Dense neutrino plasmas can develop instabilities that drive collisionless flavor exchange, equivalent to the emission of flavomons, the quanta of flavor waves. We treat these waves as independent linear degrees of freedom and develop a quasilinear theory, including backreaction on the neutrino distr… [Phys. Rev. Lett. 137, 171001] Published Wed Oct 21, 2026