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On the length scale of collective neutrino oscillations

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arxiv 2408.06422 v1 pith:ON54K3GY submitted 2024-08-12 hep-ph astro-ph.HE

classification hep-phastro-ph.HE
keywords scalelengthcollectivemythneutrinooscillationspotentialself-interaction
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In this paper, I present a discussion on the length scale of collective neutrino oscillations. There is a popular myth in the field that the length scale of collective neutrino oscillation is related to the strength of self-interaction potential; this is a result of confusion between the length scale and time scale. As a consequence of this myth, it is believed that the convergence of numerical simulation of quantum kinetic equations requires a spatial resolution (radial bin size) that is equal to the inverse of the self-interaction potential. I try to debunk this myth in this paper.

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Cited by 1 Pith paper

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  1. Neutrino flavor-wave transport: Numerical tests and theoretical challenges

    hep-ph 2026-08 conditional novelty 7.0 of 10

    Numerical tests of flavor-wave transport under slow driving show that the quasilinear and quasistatic approximations are unreliable due to wave-wave coupling and exceptional points.

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