  We employ a non-equilibrium Quantum Chromodynamics (QCD) kinetic description
to study the kinetic and chemical equilibration of the Quark-Gluon Plasma (QGP)
at weak coupling. Based on our numerical framework, which explicitly includes
all leading order processes involving light flavor degrees of freedom, we
investigate the thermalization process of homogeneous and isotropic plasmas
far-from equilibrium and determine the relevant time scales for kinetic and
chemical equilibration. We further simulate the longitudinally expanding
pre-equilibrium plasma created in ultrarelativistic heavy-ion collisions at
zero and non-zero density of the conserved charges and study its microscopic
and macroscopic evolution towards equilibrium.
