Emergence of Coherent Long Wavelength Oscillations After a Quench: Application to QCD

Abstract

To model the dynamics of the chiral order parameter in a far from equilibrium phase transition, we consider quenching in the O(4) linear sigma model. We argue, and present numerical evidence, that in the period immediately following the quench long wavelength modes of the pion field are amplified. This results in large regions of coherent pion oscillations, and could lead to dramatic phenomenological consequences in heavy ion collisions.

18 pages, 4 figures included (uuencoded and compressed); uses phyzzx; PUPT-1389, IASSNS-HEP-93/16

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