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 $\sim T$ and thus construct a 3d effective theory, the softer scales $\sim gT$ and $\sim g^{2}T$ are strongly coupled for temperatures $\text{lsim}10^7$ GeV and require lattice simulations. Within the effective theory, a lattice treatment of screening at finite quark densities $\mu \text{lsim}4/T$ is also possible.

Comments: 12 pages, 4 figures. Invited talk at Strong and Electroweak Matter, Marseille, France, June 13-17, 2000