  We consider a Bose-Einstein condensate driven by periodic delta-kicks. In
contrast to first-order descriptions, which predict rapid, unbounded growth of
the noncondensate in resonant parameter regimes, the consistent treatment of
condensate depletion in our fully-time-dependent, second-order description acts
to damp this growth, leading to oscillations in the (non)condensate population
and the coherence of the system.
