9 papers
Neutrino flavor-wave transport: Numerical tests and theoretical challenges
Anson Kost, Lucas Johns, Huaiyu Duan
Neutrino quantum kinetics is computationally intractable in the neutrino-dense arenas of core-collapse supernovae and neutron star mergers. Flavor-wave (or flavomon) transport is a…
Testing common approximations of neutrino fast flavor conversion
Erick Urquilla, Lucas Johns
A new chapter is opening in the theory of core-collapse supernovae and neutron star mergers as simulations of these events begin to incorporate fast flavor conversion (FFC) and oth…
Once-in-a-lifetime encounter models for neutrino media II: Quasi-steady states and miscidynamic flavor evolution
Anson Kost, Lucas Johns, Huaiyu Duan
We extended the once-in-a-lifetime encounter (OILE) model to stochastic interactions among neutrinos. As in the original OILE model, the new model reproduces the mean-field behavio…
Dynamical equilibria of fast neutrino flavor conversion
Jiabao Liu, Lucas Johns, Hiroki Nagakura +2
Dense neutrino systems, which display collectivity mediated by the weak interaction, have deep parallels with mean-field kinetic systems governed by other fundamental forces. We id…
The Effect of the Collisional Flavor Instability on Core-Collapse Supernova Models
Tianshu Wang, Hiroki Nagakura, Lucas Johns +1
We explore the effects of the neutrino collisional flavor instability (CFI) based on 1D and 2D core-collapse supernova (CCSN) simulations done using the sophisticated radiation-hyd…
Local-equilibrium theory of neutrino oscillations
Lucas Johns, Anson Kost
Miscidynamics describes coarse-grained neutrino transport under the assumption that flavor mixing is in local equilibrium. Here we introduce the concept of turbulent flavor-wave vi…