Speaker
Description
We consider the influence of quantum decoherence of neutrino mass states on collective neutrino oscillations in the supernova fluxes. Collective neutrino oscillations arise from the high density of neutrinos themselves which is the case in supernovae. In our work the neutrino system is considered as an open quantum system, taking into account the neutrino self-interaction. To study such a system, the stability of the corresponding Lindblad equation is analyzed. We generalize our previous studies [1], in which new conditions for occurrence of the collective neutrino oscillations were derived with account for neutrino quantum decoherence which can appear as a result of the physics beyond the Standard Model [2]. The results achieved there have been extended onto the three flavor case.
These results may be particularly relevant in the light of future experiments related to astrophysical neutrino fluxes from supernovae (JUNO, Hyper-Kamiokande).
[1] K.Stankevich, A.Studenikin, Collective neutrino oscillations accounting for neutrino quantum decoherence, PoS ICHEP2020 (2021) 216.
[2] K.Stankevich, A.Studenikin, Neutrino quantum decoherence engendered by neutrino radiative decay, Phys.Rev.D 101 (2020) 5.
