A change of direction in pairwise neutrino conversion physics: The effect of collisions
arXiv:2011.00004 · doi:10.1103/PhysRevD.103.063002
Abstract
Fast pairwise conversions of neutrinos may affect the flavor distribution in the core of neutrino-dense sources. We explore the interplay between collisions and fast conversions within a simplified framework that assumes angle-independent, direction-changing collisions in a neutrino gas that has no spatial inhomogeneity. Counter to expectations, we find that collisions may enhance fast flavor conversions instead of damping them. Our work highlights the need to take into account the feedback of collisions on the neutrino angular distributions self-consistently, in order to predict the flavor outcome in the context of fast pairwise conversions reliably.
11 pages, 6 figures, 2-column revtex4-1 format. Version accepted in Phys.Rev.D. Supplemental material: https://sid.erda.dk/share_redirect/Cb7Xyrai4n/index.html
References in corpus (18)
- Relic neutrino decoupling with flavour oscillations revisited
- Collective neutrino flavor transitions in supernovae and the role of trajectory averaging
- Fast Pairwise Conversion of Supernova Neutrinos: A Dispersion-Relation Approach
- Coherent Development of Neutrino Flavor in the Supernova Environment
- Role of dense matter in collective supernova neutrino transformations
- The multi-angle instability in dense neutrino systems
- Neutrino Mass Hierarchy and Stepwise Spectral Swapping of Supernova Neutrino Flavors
- Neutrino oscillations in supernovae: angular moments and fast instabilities
- Imprints of neutrino-pair flavor conversions on nucleosynthesis in ejecta from neutron-star merger remnants
- Neutrino scattering and flavor transformation in supernovae
- Fast collective neutrino oscillations inside the neutrino sphere in core-collapse supernovae
- 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
- The dispersion relation of the fast neutrino oscillation wave
- Supernova neutrino halo and the suppression of self-induced flavor conversion
- Low-energy spectral features of supernova (anti)neutrinos in inverted hierarchy
- Prospects for Neutrino-Antineutrino Transformation in Astrophysical Environments
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- Neutrino Flavor Conversions in High-Density Astrophysical and Cosmological Environments
- Neutrino Fast Flavor Pendulum. Part 2: Collisional Damping
- Collisional instabilities of neutrinos and their interplay with fast flavor conversion in compact objects
- New method for detecting fast neutrino flavor conversions in core-collapse supernova models with two-moment neutrino transport
- Perturbing Fast Neutrino Flavor Conversion
- Quasi-steady evolution of fast neutrino-flavor conversions
- Two-beam Multiparticle Many-body simulations of Inhomogeneous FFI
- Fast flavor conversion of neutrinos in presence of matter bulk velocity
- Where, when and why: occurrence of fast-pairwise collective neutrino oscillation in three-dimensional core-collapse supernova models
- Fast Neutrino Conversion in Hydrodynamic Simulations of Neutrino-Cooled Accretion Disks