Time-Like Shock Hadronization of a Supercooled Quark-Gluon Plasma
  We study the energy-momentum and baryonic number conservation laws for quark-gluon plasma discontinuity transitions into hadron matter states. We find that the time-like shock hadronization of a supercooled quark-gluon plasma (when the normal vector to the discontinuity hypersurface is time-like) should take place. We consider some properties of this process, which is different from the standard space-like shock hadronization. 
M.I. Gorenstein, H.G. Miller, R.M. Quick and R.A. Ritchie