%0 Journal Article
%T Nonlinear evolution of the momentum dependent condensates in strong interaction: the ``pseudoscalar laser''
%A Adrian Dumitru
%A Ove Scavenius
%J Physics
%D 2000
%I arXiv
%R 10.1103/PhysRevD.62.076004
%X We discuss the relaxation of the scalar and pseudoscalar condensates after a rapid quench from an initial state with fluctuations. If we include not only the zero-mode but also higher modes of the condensates in the classical evolution, we observe parametric amplification of those ``hard'' modes. Thus, they couple nonlinearly to the ``soft'' modes. As a consequence, domains of coherent pi-field emerge long after the initial spinodal decomposition. The momentum-space distribution of pions emerging from the decay of that momentum-dependent condensate is discussed.
%U http://arxiv.org/abs/hep-ph/0003134v2