Nonstandard neutrino-neutrino refractive effects in dense neutrino gases

2008/10/31 by Mattias Blennow, Alessandro Mirizzi, Pasquale D. Serpico +1 · 59 citations
Physics and Astronomy · #Astrophysics #Astrophysics and Cosmic Phenomena #Measurements of neutrino speed #Neutrino #Neutrino Physics Research #Neutrino oscillation #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Solar neutrino #Solar neutrino problem #Supernova #astro-ph #hep-ph

paper · pdf · doi:10.1103/physrevd.78.113004

published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 78(11) (American Physical Society) · 9 pages, 4 figures, REVTeX4, minor changes, final version published in Phys. Rev. D

openalex publication_date 2008/12/10 · arxiv created 2008/12/17 · arxiv updated 2010/04/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We investigate the effects of nonstandard four-fermion neutrino-neutrino interactions on the flavor evolution of dense neutrino gases. We find that in the regions where the neutrino-neutrino refractive index leads to collective flavor oscillations, the presence of new neutrino interactions can produce flavor equilibration in both normal and inverted neutrino mass hierarchy. In realistic supernova environments, these effects are significant if the nonstandard neutrino-neutrino interaction strength is comparable to the one expected in the standard case, dominating the ordinary matter potential. However, very small nonstandard neutrino-neutrino couplings are enough to trigger the usual collective neutrino flavor transformations in the inverted neutrino mass hierarchy, even if the mixing angle vanishes exactly.

Citations

• "Secret" neutrino interactions
• Role of dense matter in collective supernova neutrino transformations
• Simulation of coherent nonlinear neutrino flavor transformation in the supernova environment: Correlated neutrino trajectories
• Neutrino Mass Hierarchy and Stepwise Spectral Swapping of Supernova Neutrino Flavors
• Non-standard neutrino interactions and neutrino oscillation experiments
• Self-induced conversion in dense neutrino gases: Pendulum in flavor space
• Flavor changing supersymmetry interactions in a supernova
• Simulating nonlinear neutrino flavor evolution
• Effects of non-standard neutrino–electron interactions on relic neutrino decoupling
• Speed-up of neutrino transformations in a supernova environment
• Probing nonstandard neutrino interactions with supernova neutrinos
• Self-induced parametric resonance in collective neutrino oscillations
• Test of tau neutrino interactions with atmospheric neutrinos and K2K data
• Physics at a future Neutrino Factory and super-beam facility

Cited by

• Collective Neutrino Oscillations
• Triggering collective oscillations by three-flavor effects