Quasi-steady flavor configuration of multi-energy neutrino ensembles

Manuel Goimil-García; Irene Tamborra

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arXiv · 2608.06464

Quasi-steady flavor configuration of multi-energy neutrino ensembles

Manuel Goimil-García·Irene Tamborra

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Abstract

Neutrino flavor conversion profoundly impacts the explosion mechanism and multi-messenger emissions of core-collapse supernovae. Yet, state-of-the-art hydrodynamic simulations of neutrino-dense astrophysical environments cannot account for neutrino quantum kinetics, necessitating subgrid schemes to model the impact of neutrino self-interaction on the quasi-steady-state flavor configuration. We present semi-analytical approximations for the outcomes of both slow and fast flavor conversions in quasi-homogeneous systems with periodic boundary conditions. Independent of the mass ordering, our ansatz demonstrates excellent agreement with multi-angle and multi-energy solutions of the neutrino kinetic equations across a wide range of representative (anti)neutrino distributions.

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Manuel Goimil-García, Irene Tamborra. 2026-08-06. Quasi-steady flavor configuration of multi-energy neutrino ensembles. https://arxiv.org/abs/2608.06464

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