  Nonequilibrium Green's functions represent a promising tool for describing
central nuclear reactions. Even at the single-particle level, though, the
Green's functions contain more information that computers may handle in the
foreseeable future. In this study, we explore slab collisions in one dimension,
first in the mean field approximation and demonstrate that only function
elements close to the diagonal in arguments are relevant, in practice, for the
reaction calculations. This bodes well for the application of the Green's
functions to the reactions. Moreover we demonstrate that an initial state for a
reaction calculation may be generated through adiabatic transformation of
interactions. Finally, we report on our progress in incorporating correlations
into the dynamic calculations.
