Oscillatory dynamics and non-markovian memory in dissipative quantum   systems
  The nonequilibrium dynamics of a small quantum system coupled to a dissipative environment is studied. We show that (1) the oscillatory dynamics close to a coherent-to-incoherent transition is surprisingly different from the one of the classical damped harmonic oscillator and that (2) non-markovian memory plays a prominent role in the time evolution after a quantum quench. 
D. M. Kennes, O. Kashuba, M. Pletyukhov, H. Schoeller, and V. Meden
cond-mat.str-el cond-mat.stat-mech quant-ph