Role of dense matter in collective supernova neutrino transformations

2008/07/31 by A. Esteban-Pretel, Andreu Esteban-Pretel, Alessandro Mirizzi +9 · 5 citations
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Dark Matter and Cosmic Phenomena #Neutrino Physics Research #astro-ph #hep-ph

paper · pdf · doi:10.1103/physrevd.78.085012

published as Phys.Rev.D78:085012,2008 · 7 pages, 2 figures. Published version

arxiv created 2008/10/16 · openalex publication_date 2008/10/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

For neutrinos streaming from a supernova core, dense matter suppresses self-induced flavor transformations if the electron density n_e significantly exceeds the neutrino density n_\ensuremathν in the conversion region. If n_e is comparable to n_\ensuremathν, one finds multiangle decoherence, whereas the standard self-induced transformation behavior requires that in the transformation region n_\ensuremathν is safely above n_e. This condition need not be satisfied in the early phase after the supernova core bounce. Our new multiangle effect is a subtle consequence of neutrinos traveling on different trajectories when streaming from a source that is not pointlike.

Citations

• Oscillation effects and time variation of the supernova neutrino signal
• Speed-up of neutrino transformations in a supernova environment

Cited by

• Improved analysis of SN1987A antineutrino events
• Collective Neutrino Oscillations
• Neutrinos from Supernovae
• Fast neutrino flavor conversion: Roles of dense matter and spectrum crossing
• Supernova Neutrino Detection