Steep radial lepton gradients suppress fast neutrino-flavor conversion in global spherical simulations; the suppression depends strongly on the attenuation parameter and is explained by an adiabatic condition on flavor-wave propagation, leading to a cautionary formula for classical transport codes.
Morinaga, Fast neutrino flavor instability and neutrino flavor lepton number crossings, Physical Review D105, L101301 (2022)
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Fast Neutrino-Flavor Conversion with Attenuation and Global Lepton Gradient
Steep radial lepton gradients suppress fast neutrino-flavor conversion in global spherical simulations; the suppression depends strongly on the attenuation parameter and is explained by an adiabatic condition on flavor-wave propagation, leading to a cautionary formula for classical transport codes.