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arXiv · 2412.12268

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

Manuel Goimil-García·Shashank Shalgar·Irene Tamborra
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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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Manuel Goimil-García, Shashank Shalgar, Irene Tamborra. 2024-12-16. Pauli blocking: probing beyond-mean-field effects in neutrino flavor evolution. https://arxiv.org/abs/2412.12268

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