Alfred H. Mueller<br>

Department of Physics, Columbia University<br>

<i>Small-x behavior and saturation in nuclear and particle physics</i><p>

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The relationship between RHIC and HERA data is explored using the idea of
saturation (color glass condensate) as a unifying framework for
interpretation.  A description of the early stages of a heavy ion collision
is given consistent with the RHIC results.  The relevant QCD dynamics at the
various stages of a heavy ion collision, from production of gluons to
equilibration, is reviewed.  Some comments on current phenomenology are
given.
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