178 citations · 726 across the 27 of their papers we have counts for
8 papers · 1 filter
BGK subgrid model for neutrino quantum kinetics
Hiroki Nagakura, Lucas Johns, Masamichi Zaizen
We present a new subgrid model for neutrino quantum kinetics, which is primarily designed to incorporate effects of collective neutrino oscillations into neutrino-radiation-hydrody…
Universality of the Neutrino Collisional Flavor Instability in Core Collapse Supernovae
Jiabao Liu, Hiroki Nagakura, Ryuichiro Akaho +3
Neutrinos are known to undergo flavor conversion processes among the three flavors. The fast flavor conversion (FFC) has been the central piece of flavor conversions taking place i…
Fast neutrino-flavor swap in high-energy astrophysical environments
Masamichi Zaizen, Hiroki Nagakura
We assert that non-linear features of fast neutrino-flavor conversion (FFC) can be qualitatively different between core-collapse supernovae (CCSNe) and binary neutron star mergers…
Collisional and Fast Neutrino Flavor Instabilities in Two-dimensional Core-collapse Supernova Simulation with Boltzmann Neutrino Transport
Ryuichiro Akaho, Jiabao Liu, Hiroki Nagakura +2
We present a comprehensive study on the occurrences of the collisional flavor instability (CFI) and the fast flavor instability (FFI) of neutrinos based on a two-dimensional (2D) c…
Basic characteristics of neutrino flavor conversions in the post-shock regions of core-collapse supernova
Hiroki Nagakura, Masamichi Zaizen
One of the active debates in core-collapse supernova (CCSN) theory is how significantly neutrino flavor conversions induced by neutrino-neutrino self-interactions change the conven…
Characterizing quasi-steady states of fast neutrino-flavor conversion by stability and conservation laws
Masamichi Zaizen, Hiroki Nagakura
The question of what ingredients characterize the quasi-steady state of fast neutrino-flavor conversion (FFC) is one of the long-standing riddles in neutrino oscillation. Addressin…
Flavor conversions with energy-dependent neutrino emission and absorption
Chinami Kato, Hiroki Nagakura, Masamichi Zaizen
Fast neutrino flavor conversions (FFCs) and collisional flavor instabilities (CFIs) potentially affect the dynamics of core-collapse supernovae (CCSNe) and binary neutron star merg…
A Systematic Study on the Resonance in Collisional Neutrino Flavor Instability
Jiabao Liu, Masamichi Zaizen, Shoichi Yamada
Investigations on the resonance in the collisional flavor instability (CFI) of neutrinos, which were reported recently, are reported. We show that the resonance occurs not only for…