Unusual space-time evolution for heavy-ion collisions at high energies dueto the QCD phase transition

The space-time evolution of high-energy noncentral heavy-ion collisions is studied with relativistic hydrodynamics. The results are very sensitive to the equation of state (EoS). For an EoS with the QCD phase transition, an u nusual matter distribution develops. Before freeze-out, two shells are form ed which physically separate and leave a maximum in the center. We make spe cific predictions for the azimuthal dependence of the flow and for two-pion interferometry, contrasting our results with a resonance gas EoS.