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Debye Screening in the QCD plasma

Abstract

Various definitions for the QCD Debye mass and its evaluation are reviewed in a non-perturabtive framework for the study of screening of general static sources. While it is possible to perturbatively integrate over scales T\sim T and thus construct a 3d effective theory, the softer scales gT\sim gT and g2T\sim g^2T are strongly coupled for temperatures \lsim 10^7 GeV and require lattice simulations. Within the effective theory, a lattice treatment of screening at finite quark densities \mu \lsim 4/T is also possible.Comment: 12 pages, 4 figures. Invited talk at Strong and Electroweak Matter, Marseille, France, June 13-17, 200

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