On signals of quark-gluon plasma freeze-out

The time-scales of rehadronization are considered for a baryon-free QGP atRHIC and LHC energies. The non-equilibrium nucleation scenario leads tomechanical instability of the supercooled QGP phase which then may be suddenlyconverted in a timelike deflagration from the supercooled state to a(super)heated hadronic matter. In a model simulation such a sudden process wasindeed possible and satisfied energy and momentum conservation withnon-decreasing entropy. It is possible to reach a hadronic state frozen outimmediately after the timelike deflagration. If a TD leads to a simultaneoushadronization and freeze-out, the conditions of a pion-flash are satisfied.This rehadronization mechanism is signalled by a reduced difference between thesidewards and outward components of Bose-Einstein correlation functions, in theobservation of the free masses of the resonances in the dilepton spectra and ina clean strangeness signal of the QGP.