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Astrophysics > High Energy Astrophysical Phenomena

arXiv:2111.00437 (astro-ph)
[Submitted on 31 Oct 2021 (v1), last revised 11 May 2022 (this version, v2)]

Title:Many-body effects of collective neutrino oscillations

Authors:Zewei Xiong
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Abstract:Collective neutrino oscillations are critical to determine the neutrino flavor content, which has striking impacts on core-collapse supernovae or compact binary merger remnants. It is a challenging many-body problem that so far has been mainly studied at the mean-field approximation. We use a setup that captures the relevant physics and allows exact solution for a large number of neutrinos. We, for the first time, find quantitative deviation from the mean-field evolution due to many-body decoherence in flavor space. Similar features have been observed in a spin-1 Bose-Einstein condensate, which opens the possibility of experimental explorations of collective flavor phenomena. Our results call for more careful examinations on the possible many-body corrections to collective neutrino oscillations in astrophysical environments.
Comments: 7 pages, including 5 figures
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE); High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:2111.00437 [astro-ph.HE]
  (or arXiv:2111.00437v2 [astro-ph.HE] for this version)
  https://doi.org/10.48550/arXiv.2111.00437
Journal reference: Physical Review D 105.10 (2022): 103002
Related DOI: https://doi.org/10.1103/PhysRevD.105.103002

Submission history

From: Zewei Xiong [view email]
[v1] Sun, 31 Oct 2021 09:07:45 UTC (390 KB)
[v2] Wed, 11 May 2022 11:07:25 UTC (382 KB)
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