Abstract
Recent developments in the dynamical description of the early stage of heavy ion collisions at collider energies on the basis of the improved parton model and kinetic theory are presented. The Parton Cascade Model is discussed which links firmly established perturbative QCD with classical transport theory for multiparton systems to give a comprehensive description of nuclear collisions in complete phase-space. The space-time evolution of these reactions is investigated in terms of the dissipative dynamics of short range (semi)hard quark and gluon interactions, by evolving the partons' phase-space distributions in real time according to a transport equation through multiple collisions, emission and absorption processes within perturbative QCD. The resulting parton cascade picture is applied to study multiparticle production in p p ̄ , AA and pA collisions at collider energies ( √ s nucleon $ ̆ 100 GeV ), as well as issues of thermalization, chemical equilibration, and properties of plasma signatures in heavy ion collisions at the future RHIC and LHC experiments.
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