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Title

Role of dense matter in collective supernova neutrino transformations

AuthorsEsteban-Pretel, Andreu ; Mirizzi, A.; Pastor, Sergio ; Tomàs, Ricard ; Raffelt, Georg G.; Serpico, P. D.; Sigl, Günter
Keywords[PACS] Neutrino mass and mixing
[PACS] Supernovae
Issue Date16-Oct-2008
CitationPhysical Review D 78(8): 085012 (2008)
AbstractFor 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(nu) in the conversion region. If n(e) is comparable to n(nu), one finds multiangle decoherence, whereas the standard self-induced transformation behavior requires that in the transformation region n(nu) 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.
Description6 pages, 2 figures.-- PACS nrs.: 14.60.Pq; 97.60.Bw.-- ArXiv pre-print available at: http://arxiv.org/abs/0807.0659
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevD.78.085012
URIhttp://hdl.handle.net/10261/11952
DOI10.1103/PhysRevD.78.085012
ISSN0556-2821
Appears in Collections:(IFIC) Artículos
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