ИСТИНА

The phenomena of neutrino oscillations emerges due to coherent superposition of neutrino mass states. An external environment can modify a neutrino evolution in a way that the superposition will be violated. Such violation calls quantum decoherence of neutrino states and leads to a suppression of flavor oscillations. In this work we present the developed in [1-5] a new theoretical framework, based on the quantum field theory of open systems applied to neutrinos. Within this framework we proposed and considered a new mechanism of the neutrino quantum decoherence engendered by the neutrino radiative decay to photons and dark photons in an astrophysical environment (e.g., supernovae) [4-5]. [1] K.Stankevich, A.Studenikin, Neutrino quantum decoherence due to entanglement with a magnetic field, PoS EPS-HEP2017 (2018) 645. [2] K.Stankevich, A.Studenikin, Neutrino decoherence due to radiative decay, PoS ICHEP2018 (2019) 925. [3] K.Stankevich, A.Studenikin, Neutrino quantum decoherence due to entanglement with magnetic field, J.Phys.Conf.Ser. 1342 (2020) 012131. [4] K.Stankevich, A.Studenikin, The effect of neutrino quantum decoherence, arXiv:1912.13313. [5] K.Stankevich, A.Studenikin, Neutrino quantum decoherence engendered by neutrino radiative decay, arXiv:submit/3035045 [hep-ph] 7 Feb 2020, accepted for publishing in Physical Review D.