109 citations · 556 across the 10 of their papers we have counts for
10 papers
Neutrino transport with Monte Carlo method: II. Quantum Kinetic Equations
Chinami Kato, Hiroki Nagakura, Taiki Morinaga
Neutrinos have an unique quantum feature as flavor conversions. Recent studies suggested that collective neutrino oscillations play important roles in high-energy astrophysical phe…
Nonlinear evolution of fast neutrino flavor conversion in the preshock region of core-collapse supernovae
Masamichi Zaizen, Taiki Morinaga
In environments with high dense neutrino gases, such as in core-collapse supernovae, the neutrinos can experience collective neutrino oscillation due to their self-interactions. In…
Spatiotemporal linear instability analysis of collective neutrino flavor conversion in 4-dimensional spacetime
Taiki Morinaga
In an environment with high-density neutrinos formed in a core-collapse supernova (CCSN), the neutrinos exhibit nonlinear and complex oscillation behaviors due to their self-intera…
Fast neutrino flavor instability and neutrino flavor lepton number crossings
Taiki Morinaga
In this paper, we show the equivalency between the existence of fast neutrino flavor instability and that of neutrino flavor lepton number (NFLN) crossings, which indicates that an…
Spatio-temporal linear instability analysis for arbitrary dispersion relations on the Lefschetz thimble in multidimensional spacetime
Taiki Morinaga, Shoichi Yamada
In linear stability analysis of field quantities described by partial differential equations, the well-established classical theory is all but impossible to apply to concrete probl…
Fast-pairwise collective neutrino oscillations associated with asymmetric neutrino emissions in core-collapse supernova
Hiroki Nagakura, Taiki Morinaga, Chinami Kato +1
We present a linear stability analysis of the fast-pairwise neutrino flavor conversion based on a result of our latest axisymmetric core-collapse supernova (CCSN) simulation with f…
Fast collective neutrino oscillations inside the neutrino sphere in core-collapse supernovae
Milad Delfan Azari, Shoichi Yamada, Taiki Morinaga +6
Neutrinos are believed to have a key role in the explosion mechanism of core-collapse supernovae as they carry most of the energy released by the gravitational collapse of a massiv…
A new possibility of the fast neutrino-flavor conversion in the pre-shock region of core-collapse supernova
Taiki Morinaga, Hiroki Nagakura, Chinami Kato +1
We make a strong case that the fast neutrino-flavor conversion, one of the collective flavor oscillation modes, commonly occurs in core-collapse supernovae (CCSNe). It is confirmed…
Linear Analysis of Fast-Pairwise Collective Neutrino Oscillations in Core-Collapse Supernovae based on the Results of Boltzmann Simulations
Milad Delfan Azari, Shoichi Yamada, Taiki Morinaga +4
Neutrinos are densely populated deep inside the core of massive stars after their gravitational collapse to produce supernova explosions and form compact stars such as neutron star…
Linear stability analysis of collective neutrino oscillations without spurious modes
Taiki Morinaga, Shoichi Yamada
Collective neutrino oscillations are induced by the presence of neutrinos themselves. As such they are intrinsically nonlinear phenomena and are much more complex than linear count…