Kinetic Equations for Longwavelength Excitations of the Quark-Gluon Plasma

Abstract

We show that longwavelength excitations of the quark-gluon plasma are described by simple kinetic equations which represent the exact equations of motion at leading order in $g$. Properties of the so-called ``hard thermal loops'', i.e. the dominant contributions to amplitudes with soft external lines, find in this approach a natural explanation. In particular, their generating functional appears here as the effective action describing long wavelength excitations of the plasma.

January 8, 1993; 8 pages; SPhT/93-1

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