Neutrino scattering and flavor transformation in supernovae

Abstract

We argue that the small fraction of neutrinos that undergo direction-changing scattering outside of the neutrinosphere could have significant influence on neutrino flavor transformation in core-collapse supernova environments. We show that the standard treatment for collective neutrino flavor transformation is adequate at late times, but could be inadequate in the crucial shock revival/explosion epoch of core-collapse supernovae, where the potentials that govern neutrino flavor evolution are affected by the scattered neutrinos. Taking account of this effect, and the way it couples to entropy and composition, will require a new paradigm in supernova modeling.

5 pages, 3 figures

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• Neutrino emission characteristics and detection opportunities based on three-dimensional supernova simulations
• Neutrino oscillations in supernovae: angular moments and fast instabilities
• Imprints of neutrino-pair flavor conversions on nucleosynthesis in ejecta from neutron-star merger remnants
• A new possibility of the fast neutrino-flavor conversion in the pre-shock region of core-collapse supernova
• Effects of neutrino oscillations on nucleosynthesis and neutrino signals for an 18 M supernova model
• Fast flavor oscillations in dense neutrino media with collisions
• Collective fast neutrino flavor conversions in a 1D box: Initial condition and long-term evolution
• Neutrino-antineutrino correlations in dense anisotropic media
• Neutrino propagation in media: Flavor-, helicity-, and pair correlations
• Matter Neutrino Resonance Transitions above a Neutron Star Merger Remnant
• A change of direction in pairwise neutrino conversion physics: The effect of collisions
• Neutrino Flavor Conversions in High-Density Astrophysical and Cosmological Environments
• Evolution of collisional neutrino flavor instabilities in spherically symmetric supernova models
• Simulations of Fast Neutrino Flavor Conversions with Interactions in Inhomogeneous Media
• Code Comparison for Fast Flavor Instability Simulation
• Collisional instabilities of neutrinos and their interplay with fast flavor conversion in compact objects
• Neutrino Flavor Evolution in Binary Neutron Star Merger Remnants
• Damping the neutrino flavor pendulum by breaking homogeneity
• Enhancement or damping of fast neutrino flavor conversions due to collisions
• Entanglement and correlations in fast collective neutrino flavor oscillations
• Neutrino flavor transformation in the lepton-asymmetric universe
• General-Relativistic Quantum-Kinetics Neutrino Transport
• Robust measurement of supernova ${\nu }_e$ spectra with future neutrino detectors
• Self-consistency in models of neutrino scattering and fast flavor conversion
• Helicity coherence in binary neutron star mergers and non-linear feedback
• Fast Flavor Transformations
• Estimating the core compactness of massive stars with Galactic supernova neutrinos
• Prospects for Neutrino Spin Coherence in Supernovae
• Three-flavor collective neutrino conversions with multi-azimuthal-angle instability in an electron-capture supernova model
• Geometric phases in neutrino oscillations with nonlinear refraction
• Multipole expansion method for supernova neutrino oscillations
• Inference solves a boundary-value collision problem, with relevance to neutrino flavor transformation
• Neutrino transport with Monte Carlo method: II. Quantum Kinetic Equations
• Inference of bipolar neutrino flavor oscillations near a core-collapse supernova, based on multiple measurements at Earth