Theoretical summary: The First International Conference on Hard and   Electromagnetic Probes in Relativistic Nuclear Collisions
  This is an attempt to summarize the theoretical talks given at the First International Conference "Hard Probes '04", dedicated to the study of the properties of quark-gluon matter and its diagnostics with the hard processes.   The talk covers the following topics: the structure of quark-gluon matter at finite temperature; the theory of nuclear wave functions at small Bjorken x; the propagation of jets, heavy quarkonia and heavy quarks through the dense QCD matter. 
D. Kharzeev