Time-dependent and quasisteady features of fast neutrino-flavor conversion
H Nagakura, M Zaizen - Physical Review Letters, 2022 - APS
Despite the theoretical indication that fast neutrino-flavor conversion (FFC) ubiquitously
occurs iin core-collapse supernovae and binary neutron star mergers, the lack of global …
occurs iin core-collapse supernovae and binary neutron star mergers, the lack of global …
Characterizing quasisteady states of fast neutrino-flavor conversion by stability and conservation laws
M Zaizen, H Nagakura - Physical Review D, 2023 - APS
The question of what ingredients characterize the quasisteady state of fast neutrino-flavor
conversion (FFC) is one of the longstanding riddles in neutrino oscillation. Addressing this …
conversion (FFC) is one of the longstanding riddles in neutrino oscillation. Addressing this …
Fast flavor instability in hypermassive neutron star disk outflows
R Fernández, S Richers, N Mulyk, S Fahlman - Physical Review D, 2022 - APS
We examine the effect of neutrino flavor transformation by the fast flavor instability (FFI) on
long-term mass ejection from accretion disks formed after neutron star mergers. Neutrino …
long-term mass ejection from accretion disks formed after neutron star mergers. Neutrino …
Neutrino fast flavor instability in three dimensions
Neutrino flavor instabilities have the potential to shuffle neutrinos between electron, mu, and
tau flavor states, possibly modifying the core-collapse supernova mechanism and the heavy …
tau flavor states, possibly modifying the core-collapse supernova mechanism and the heavy …
Code comparison for fast flavor instability simulations
The fast flavor instability (FFI) is expected to be ubiquitous in core-collapse supernovae and
neutron star mergers. It rapidly shuffles neutrino flavor in a way that could impact the …
neutron star mergers. It rapidly shuffles neutrino flavor in a way that could impact the …
[HTML][HTML] Neutrino fast flavor instability in three dimensions for a neutron star merger
The flavor evolution of neutrinos in core collapse supernovae and neutron star mergers is a
critically important unsolved problem in astrophysics. Following the electron flavor evolution …
critically important unsolved problem in astrophysics. Following the electron flavor evolution …
Connecting small-scale to large-scale structures of fast neutrino-flavor conversion
H Nagakura, M Zaizen - Physical Review D, 2023 - APS
We present a systematic study of fast neutrino-flavor conversion (FFC) with both small-scale
and large-scale numerical simulations in spherical symmetry. We find that FFCs can, in …
and large-scale numerical simulations in spherical symmetry. We find that FFCs can, in …
General-relativistic quantum-kinetics neutrino transport
H Nagakura - Physical Review D, 2022 - APS
We developed a new general-relativistic quantum-kinetics neutrino transport code,
GRQKNT, for numerical studies of quantum kinetics of nonequilibrium neutrinos in six …
GRQKNT, for numerical studies of quantum kinetics of nonequilibrium neutrinos in six …
Suppression of fast neutrino flavor conversions occurring at large distances in core-collapse supernovae
Neutrinos propagating in dense neutrino media such as core-collapse supernovae and
neutron star merger remnants can experience the so-called fast flavor conversions on scales …
neutron star merger remnants can experience the so-called fast flavor conversions on scales …