Analysis of Collective Neutrino Flavor Transformation in Supernovae

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dc.creatorDuan, Huaiyu
dc.creatorFuller, George M.
dc.creatorCarlson, J.
dc.creatorQian, Yong-Zhong
dc.date2007-03-29
dc.date.accessioned2026-07-07T11:01:18Z
dc.date.available2026-07-07T11:01:18Z
dc.descriptionWe study the flavor evolution of a dense gas initially consisting of pure mono-energetic $ν_e$ and $\barν_e$. Using adiabatic invariants and the special symmetry in such a system we are able to calculate the flavor evolution of the neutrino gas for the cases with slowly decreasing neutrino number densities. These calculations give new insights into the results of recent large-scale numerical simulations of neutrino flavor transformation in supernovae. For example, our calculations reveal the existence of what we term the ``collective precession mode''. Our analyses suggest that neutrinos which travel on intersecting trajectories subject to destructive quantum interference nevertheless can be in this mode. This mode can result in sharp transitions in the final energy-dependent neutrino survival probabilities across all trajectories, a feature seen in the numerical simulations. Moreover, this transition is qualitatively different for the normal and inverted neutrino mass hierarchies. Exploiting this difference, the neutrino signals from a future galactic supernova can potentially be used to determine the actual neutrino mass hierarchy.
dc.description18 pages, 6 figures, retex4 format
dc.identifierhttps://arxiv.org/abs/astro-ph/0703776
dc.identifierhttp://arxiv.org/abs/astro-ph/0703776
dc.identifierPhys.Rev.D75:125005,2007
dc.identifierdoi:10.1103/PhysRevD.75.125005
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/187916
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleAnalysis of Collective Neutrino Flavor Transformation in Supernovae
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