HISTORY OF QUARK-GLUON PLASMA EVOLUTION FROM PHOTON INTERFEROMETRY

Two-photon intensity interferometry is used to probe the dynamics of q uarks and gluons in a high-energy nucleus-nucleus collision. A (1 + 1) -dimensional expansion of the plasma according to Bjorken hydrodynamic s as well as a (3 + 1)-dimensional expansion, both with a first-order phase transition, are considered. The correlation of high-transverse-m omentum photons is sensitive to the details of the space-time evolutio n of the high-density QCD plasma. The so-called ''longitudinal'' and ' 'outward'' correlations are found to be dramatically affected by the t ransverse expansion of the system.