# Pauli blocking: probing beyond-mean-field effects in neutrino flavor evolution

Source: [Pauli blocking: probing beyond-mean-field effects in neutrino flavor evolution](<https://www.sota2.com/research/paper/68fa4a1a1e209131ce93bd0b>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-25T07:39:47.123Z

Authors: Manuel Goimil-Garc\\'ia, Shashank Shalgar, Irene Tamborra

Published: 2024-12-16T19:00:06.000Z

## Abstract

Neutrino quantum kinetics in dense astrophysical environments is investigated relying on the mean-field approximation. In this paper, we heuristically explore whether beyond-mean-field effects due to neutrino degeneracy could hinder flavor instabilities that are otherwise foreseen. Our results show that these corrections shift the stability regions for a suite of (anti)neutrino ensembles: the flavor conversion of previously unstable distributions can be damped, but angular distributions that are stable in the mean-field case can also become unstable. Our work should serve as a motivation to further investigate the limitations of the mean-field treatment.

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/2412.12268>)

[PDF](<https://arxiv.org/pdf/2412.12268.pdf>)