Uncovering the matter-neutrino resonance

D. Väänänen and G. C. McLaughlin
Phys. Rev. D 93, 105044 – Published 26 May 2016

Abstract

Matter-neutrino resonances (MNRs) can drastically modify neutrino flavor evolution in astrophysical environments and may significantly impact nucleosynthesis. Here we further investigate the underlying physics of MNR-type flavor transitions. We provide generalized resonance conditions and make analytical predictions for the behavior of the system. We discuss the adiabatic evolution of these transitions considering both symmetric and standard MNR scenarios. Symmetric MNR transitions differ from standard MNR transitions in that both neutrinos and antineutrinos can completely transform to other flavors simultaneously. We provide an example of the simplest system in which such transitions can occur with a neutrino and an antineutrino having a single energy and emission angle. We further apply linearized stability analysis to predict the location of self-induced nutation-type (or bipolar) oscillations due to νν interactions in the regions where MNR is ineffective. In all cases, we compare our analytical predictions to numerical calculations.

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  • Received 7 October 2015

DOI:https://doi.org/10.1103/PhysRevD.93.105044

© 2016 American Physical Society

Physics Subject Headings (PhySH)

Gravitation, Cosmology & Astrophysics

Authors & Affiliations

D. Väänänen and G. C. McLaughlin*

  • Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA

  • *Gail_McLaughlin@ncsu.edu

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Issue

Vol. 93, Iss. 10 — 15 May 2016

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