Neutrino propagation hinders fast pairwise flavor conversions

作者: Irene Tamborra , Shashank Shalgar , Ian Padilla-Gay

DOI: 10.1088/1475-7516/2020/06/048

关键词: LeptonTerm (time)Equations of motionParticle physicsField (physics)PhysicsNeutrinoSupernovaAsymmetryFlux

摘要: Neutrino flavor conversions may dramatically affect the inner working of compact astrophysical objects as well synthesis heavier elements. We present first sophisticated numerical solution neutrino conversion within a (2+1+1) dimensional setup: we include advective term in equations motion and track evolution two spatial dimensions, one angular variable, time. Notably, hinders development pairwise conversions, if conditions favoring such (i.e., crossings between distributions $\nu_e$ $\bar\nu_e$ or non-negligible flux neutrinos traveling backward with respect to main propagation direction) exist for time scales shorter than typical scale term. As consequence, fast can only occur when are self-sustained global, ones induced by lepton emission asymmetry (LESA) core-collapse supernovae. Our work highlights major impact dynamical field on growth instabilities strong interplay classical quantum effects. Critical limitations linear stability analysis, used predict instabilities, also pointed out.

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