  Neutrino interactions with an external environment can in influence the
neutrino oscillation pattern and the oscillations can be damped as a result of
the neutrino quantum decoherence. In particular, the quantum decoherence of
neutrino states engendered by the neutrino radiative decay accounting for the
nonstandard interactions (NSI) leads to the suppression of flavor neutrino
oscillations in the solar neutrino fluxes.
