paper

Fast Neutrino Flavor Conversions can Help and Hinder Neutrino-Driven Explosions

arXiv:2305.11207 · doi:10.1103/PhysRevLett.131.061401

Abstract

We present the first simulations of core-collapse supernovae in axial symmetry with feedback from fast neutrino flavor conversion (FFC). Our schematic treatment of FFCs assumes instantaneous flavor equilibration under the constraint of lepton-number conservation individually for each flavor. Systematically varying the spatial domain where FFCs are assumed to occur, we find that they facilitate SN explosions in low-mass (9-12 solar masses) progenitors that otherwise explode with longer time delays, whereas FFCs weaken the tendency to explode of higher-mass (around 20 solar masses) progenitors.

8 pages, 4 figures, slightly modified version, accepted by PRL

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