Spurious instabilities in multiangle simulations of collective flavor conversion
arXiv:1210.4557 · doi:10.1103/PhysRevD.86.125020
Abstract
The dense neutrino flux streaming from a core-collapse supernova can undergo self-induced flavor conversion caused by neutrino-neutrino refraction. Numerical studies of these nonlinear effects are challenging because representing the neutrino radiation field by discrete energy and angle bins can easily lead to unphysical solutions. In particular, if the number of angle bins N_a is too small, flavor conversion begins too deep and produces completely spurious results. At the same time, N_a=1 (single-angle approximation) can be a good proxy for the N_a -> infinity limit. Based on a linearized stability analysis, we explain some of the puzzling effects of discrete angle distributions.
Matches the published version, 8 pages, 5 figures
References in corpus (27)
- Collective Neutrino Oscillations
- Simulation of Coherent Non-Linear Neutrino Flavor Transformation in the Supernova Environment I: Correlated Neutrino Trajectories
- Self-induced conversion in dense neutrino gases: Pendulum in flavour space
- Collective neutrino flavor transitions in supernovae and the role of trajectory averaging
- Multiple Spectral Splits of Supernova Neutrinos
- Self-induced spectral splits in supernova neutrino fluxes
- The multi-angle instability in dense neutrino systems
- Role of dense matter in collective supernova neutrino transformations
- Analysis of Collective Neutrino Flavor Transformation in Supernovae
- Linearized flavor-stability analysis of dense neutrino streams
- Adiabaticity and spectral splits in collective neutrino transformations
- Decoherence in supernova neutrino transformations suppressed by deleptonization
- Invariants of Collective Neutrino Oscillations
- Self-induced decoherence in dense neutrino gases
- No collective neutrino flavor conversions during the supernova accretion phase
- Self-induced suppression of collective neutrino oscillations in a supernova
- Simple Picture for Neutrino Flavor Transformation in Supernovae
- Analysis of matter suppression in collective neutrino oscillations during the supernova accretion phase
- Suppression of Self-Induced Flavor Conversion in the Supernova Accretion Phase
- Supernova neutrino halo and the suppression of self-induced flavor conversion
- Low-energy spectral features of supernova (anti)neutrinos in inverted hierarchy
- N-mode coherence in collective neutrino oscillations
- Simulating nonlinear neutrino flavor evolution
- Stability analysis of collective neutrino oscillations in the supernova accretion phase with realistic energy and angle distributions
- Normal and anomalous solitons in the theory of dynamical Cooper pairing
- Self-induced parametric resonance in collective neutrino oscillations
- Synchronization vs. decoherence of neutrino oscillations at intermediate densities
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- Axial symmetry breaking in self-induced flavor conversion of supernova neutrino fluxes
- Fast neutrino flavor instability and neutrino flavor lepton number crossings
- A new possibility of the fast neutrino-flavor conversion in the pre-shock region of core-collapse supernova
- Fast-pairwise collective neutrino oscillations associated with asymmetric neutrino emissions in core-collapse supernova
- Fast oscillations, collisionless relaxation, and spurious evolution of supernova neutrino flavor
- Neutrino Emission as Diagnostics of Core-Collapse Supernovae
- Neutrino Flavor Pendulum Reloaded: The Case of Fast Pairwise Conversion
- Normal-mode Analysis for Collective Neutrino Oscillations
- Neutrino Flavor Evolution in Binary Neutron Star Merger Remnants
- Multi-azimuthal-angle effects in self-induced supernova neutrino flavor conversions without axial symmetry
- Self-induced flavor conversion of supernova neutrinos on small scales
- New effects of non-standard self-interactions of neutrinos in a supernova
- Flavor instabilities in the multi-angle neutrino line model
- Neutrino flavor pendulum in both mass hierarchies
- Combining collective, MSW, and turbulence effects in supernova neutrino flavor evolution
- Neutrino Oscillations in Core-Collapse Supernovae and Neutron Star Mergers
- Linearizing neutrino evolution equations including neutrino-antineutrino pairing correlations
- Flavor Oscillation Modes In Dense Neutrino Media
- General-Relativistic Quantum-Kinetics Neutrino Transport
- Fast neutrino flavor conversions in a supernova: Emergence, evolution, and effects
- Linear stability analysis of collective neutrino oscillations without spurious modes
- Uncovering the Matter-Neutrino Resonance
- Fast Flavor Transformations
- Breaking the symmetries in self-induced flavor conversions of neutrino beams from a ring
- Neutrino flavor mixing with moments
- Neutrino flavor transformations in supernovae as a probe for nonstandard neutrino-scalar interactions
- Spectral splits of neutrinos as a BCS-BEC crossover type phenomenon
- Flavor conversions with energy-dependent neutrino emission and absorption
- Multipole expansion method for supernova neutrino oscillations
- Comparative Testing of Subgrid Models for Fast Neutrino Flavor Conversions in Core-collapse Supernova Simulations
- Quantum Closures for Neutrino Moment Transport
- Numerical and Physical Stability of Supernova Neutrino Flavor Evolution
- Spatiotemporal linear instability analysis of collective neutrino flavor conversion in 4-dimensional spacetime
- Many-Body Simulations of the Fast Flavor Instability
- Symmetry breaking due to multi-angle matter-neutrino resonance in neutron star merger remnants
- Efficient numerical integration of neutrino oscillations in matter
- Neutrino flavour as a test of the explosion mechanism of core-collapse supernovae