Pauli blocking: probing beyond-mean-field effects in neutrino flavor evolution
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.
Keywords
Cite
@article{arxiv.2412.12268,
title = {Pauli blocking: probing beyond-mean-field effects in neutrino flavor evolution},
author = {Manuel Goimil-García and Shashank Shalgar and Irene Tamborra},
journal= {arXiv preprint arXiv:2412.12268},
year = {2025}
}
Comments
12 pages, including 9 figures. Clarifying text added; conclusions unchanged. Matches version accepted for publication in Phys. Rev. D