Effects of energy-dependent scatterings on fast neutrino flavor conversions
arXiv:2207.09496 · doi:10.1103/PhysRevD.106.123013
Abstract
Neutrino self-interactions in a dense neutrino gas can induce collective neutrino flavor conversions. Fast neutrino flavor conversions (FFCs), one of the collective neutrino conversion modes, potentially change the dynamics and observables in core-collapse supernovae and binary neutron star mergers. In cases without neutrino-matter interactions (or collisions), FFCs are essentially energy-independent, and therefore the single energy treatment has been used in previous studies. However, neutrino-matter collisions in general depend on neutrino energy, suggesting that energy-dependent features may emerge in FFCs with collisions. In this paper, we perform dynamical simulations of FFCs with iso-energetic scatterings (emulating nucleon scatterings) under multi-energy treatment. We find that cancellation between in- and out-scatterings happens in high energy region, which effectively reduces the number of collisions and then affects the FFC dynamics. In fact, the lifetime of FFCs is extended compared to the single-energy case, leading to large flavor conversions. Our result suggests that the multi-energy treatment is mandatory to gauge the sensitivity of FFCs to collisions. We also provide a useful quantity to measure the importance of multi-energy effects of collisions on FFCs.
13 pages, 7 figures, accepted to PRD
References in corpus (29)
- Neutrino oscillations in supernovae: angular moments and fast instabilities
- Fast neutrino flavor conversions near the supernova core with realistic flavor-dependent angular distributions
- Imprints of neutrino-pair flavor conversions on nucleosynthesis in ejecta from neutron-star merger remnants
- Neutrino Fast Flavor Conversions in Neutron-star Post-Merger Accretion Disks
- Fast neutrino flavor instability and neutrino flavor lepton number crossings
- Fast collective neutrino oscillations inside the neutrino sphere in core-collapse supernovae
- Fast neutrino flavor conversion, ejecta properties, and nucleosynthesis in newly-formed hypermassive remnants of neutron-star mergers
- Fast Flavor Depolarization of Supernova Neutrinos
- A new possibility of the fast neutrino-flavor conversion in the pre-shock region of core-collapse supernova
- Fast Neutrino Flavor Conversion Modes in Multidimensional Core-collapse Supernova Models: the Role of the Asymmetric Neutrino Distributions
- Fast-pairwise collective neutrino oscillations associated with asymmetric neutrino emissions in core-collapse supernova
- Linear Analysis of Fast-Pairwise Collective Neutrino Oscillations in Core-Collapse Supernovae based on the Results of Boltzmann Simulations
- Fast flavor oscillations in dense neutrino media with collisions
- On the characteristics of fast neutrino flavor instabilities in three-dimensional core-collapse supernova models
- Collective fast neutrino flavor conversions in a 1D box: Initial condition and long-term evolution
- The Neutrino Fast Flavor Instability in Three Dimensions
- Fast oscillations, collisionless relaxation, and spurious evolution of supernova neutrino flavor
- Particle-in-cell Simulation of the Neutrino Fast Flavor Instability
- A change of direction in pairwise neutrino conversion physics: The effect of collisions
- Neutrino Flavor Pendulum Reloaded: The Case of Fast Pairwise Conversion
- Fast Neutrino Flavor Conversion at Late Time
- Simulations of Fast Neutrino Flavor Conversions with Interactions in Inhomogeneous Media
- Fast neutrino flavor conversions in one-dimensional core-collapse supernova models with and without muon creation
- Prospects of fast flavor neutrino conversion in rotating core-collapse supernovae
- Dynamics of fast neutrino flavor conversions with scattering effects: a detailed analysis
- Evaluating Approximate Flavor Instability Metrics in Neutron Star Mergers
- Enhancement or damping of fast neutrino flavor conversions due to collisions
- Self-consistency in models of neutrino scattering and fast flavor conversion
- Fast Neutrino Conversion in Hydrodynamic Simulations of Neutrino-Cooled Accretion Disks
Cited by in corpus (19)
- Fast Neutrino Flavor Conversion in Core-Collapse Supernovae: A Parametric Study in 1D Models
- Roles of fast neutrino-flavor conversion on the neutrino-heating mechanism of core-collapse supernova
- Simple method for determining asymptotic states of fast neutrino-flavor conversion
- Evolution of collisional neutrino flavor instabilities in spherically symmetric supernova models
- Collisional instabilities of neutrinos and their interplay with fast flavor conversion in compact objects
- Characterizing quasi-steady states of fast neutrino-flavor conversion by stability and conservation laws
- Collision-induced flavor instability in dense neutrino gases with energy-dependent scattering
- A Systematic Study on the Resonance in Collisional Neutrino Flavor Instability
- Flavor solitons in dense neutrino gases
- Collisional and Fast Neutrino Flavor Instabilities in Two-dimensional Core-collapse Supernova Simulation with Boltzmann Neutrino Transport
- Universality of the Neutrino Collisional Flavor Instability in Core Collapse Supernovae
- Connecting small-scale to large-scale structures of fast neutrino-flavor conversion
- Applications of Machine Learning to Detecting Fast Neutrino Flavor Instabilities in Core-Collapse Supernova and Neutron Star Merger Models
- Flavor conversions with energy-dependent neutrino emission and absorption
- Symmetry and bipolar motion in collective neutrino flavor oscillations
- Spectral diversity in collisional neutrino-flavor conversion: flavor equipartition or swap
- Quasi-steady evolution of fast neutrino-flavor conversions
- Muon-induced collisional flavor instability in core-collapse supernova
- Systematic local simulations of fast neutrino flavor conversions with scattering effects