CHIRAL PHASE-TRANSITION IN AN EXPANDING QUARK-ANTI-QUARK PLASMA

We discuss the expansion of a quark-antiquark plasma in the framework of an n-body transport theory. We observe that small initial fluctuati ons increase during the expansion. The final state consists of droplet s of plasma and partons which have gained their asymptotic mass. The e xact configuration is determined by fluctuations. This finding questio ns whether mean-field approaches or hydrodynamics can provide the prop er framework to study the expansion of a quark-gluon plasma.