Resonant decay of parity odd bubbles in hot hadronic matter

We investigate the decay of metastable states with broken CP-symmetry which have recently been proposed by Kharzeev, Pisarski and Tytgat to form in hot hadronic matter. We consider the efficiency of the amplification of the η′-field via parametric resonance, taking the backreaction into account. For times of the order t≈10 fm, we find a particle density of about 0.7/fm3 and a correlation length of ξmax≈2.4 fm. The corresponding momentum spectra show a non-thermal behaviour.