Self-induced decoherence in dense neutrino gases
Self-induced decoherence in dense neutrino gases
Dense neutrino gases exhibit collective oscillations where ``self-maintained coherence'' is a characteristic feature, i.e., neutrinos of different energies oscillate with the same frequency. In a nonisotropic gas, however, the flux term of the neutrino-neutrino interaction has the opposite effect of causing kinematical decoherence of neutrinos propagating in different directions, an …