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We discuss the kinetics of a disoriented chiral condensate, treated as anopen quantum system. We suggest that the problem is analogous to that of adamped harmonic oscillator. Master equations are used to establish a hierarchyof relevant time scales. Some phenomenological consequences are brieflyoutlined.Comment: 15 latex pages, LPTHE Orsay 93/19, e-mail: krz@qcd.ups.circe.f

Coherence and decoherence in radiation off colliding heavy ions