In anisotropic neutrino gases, νν-bar pairing instabilities emerge when the excessive pair-occupation number distribution changes sign, producing pair conversions at growth rates comparable to fast flavor instabilities.
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A WKB ray-tracing framework shows that supernova matter gradients sweep flavomons through the unstable wavenumber range, strongly limiting slow-instability growth below the shock while leaving growth outside it largely intact.
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.
citing papers explorer
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Collective neutrino-antineutrino pair oscillations
In anisotropic neutrino gases, νν-bar pairing instabilities emerge when the excessive pair-occupation number distribution changes sign, producing pair conversions at growth rates comparable to fast flavor instabilities.
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Flavomons in Matter Gradients: Ray Tracing and Amplitude Evolution
A WKB ray-tracing framework shows that supernova matter gradients sweep flavomons through the unstable wavenumber range, strongly limiting slow-instability growth below the shock while leaving growth outside it largely intact.
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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.