  The wave packet approach to neutrino oscillations provides an enlightening
description of quantum decoherence induced, during propagation, by localization
effects. Within this approach, we show that a deeper insight into the dynamical
aspects of particle mixing can be obtained if one investigates the behavior of
quantum correlations associated to flavor oscillations. By identifying the
neutrino three-flavor modes with (suitably defined) three-qubit modes, the
exploitation of tools of quantum information theory for mixed states allows a
detailed analysis of the dynamical behavior of flavor entanglement during free
propagation. This provides further elements leading to a more complete
understanding of the phenomenon of neutrino oscillations, and a basis for
possible applicative implementations. The analysis is carried out by studying
the distribution of the flavor entanglement; to this aim, we perform combined
investigations of the behaviors of the two-flavor concurrence and of the
logarithmic negativities associated with specific bipartitions of the three
flavors.
