Phys Rev Lett
December 2022
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 simulations has been the greatest obstacle to study their astrophysical consequences. In this Letter, we present large-scale (50 km) simulations of FFC in spherical symmetry by using a novel approach. We effectively rescale the oscillation scale of FFC by reducing the number of injected neutrinos in the simulation box, and then extrapolate back to the case of the target density of neutrinos with a convergence study.
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