  This paper assumes that neutrino flavor conversion is induced by right-handed
neutrino mixture via seesaw mechanism, which leads to apparent fake neutrino
mixture with neutrino mass eigenstate consistent with flavor state of
left-handed neutrino rather than mixture of flavor state. The transition
probability between right-handed neutrinos due to mixture can be explained well
by boson intermediating flavor flip interaction between right-handed neutrinos
and neutrino oscillation can be considered macro phenomenon before all flavor
flip interactions arrive at balance.
