In high-energy collisions experiments measure only the asymptotic momenta of out-going particles. Space-time information must be inferred either by the principle of one-particle diffraction, or with two-particle correlations.  The former, which uses the same principal as a diffraction grating, works only for simple process such as elastic scattering of electrons off nuclei.  This talk will address the latter, two-particle correlations. This technique works best in highly randomized collisions, such as heavy-ion collisions.  I will focus on the role such measurements are playing in identifying the properties of the novel matter formed in very high energy Au+Au collisions at the Relativistic Heavy Ion Collider.

* Dr. Pratt received his Ph.D. degree from the University of Minnesota in 1985
and is currently an Associate Professor at Michigan State University.