Abstract
Abstract We discuss the potential acting between a heavy (static) quark and antiquark placed in the quark-gluon plasma using a plasma model, where the low-momentum parts of the gluon (and quark) spectra are cut off due to a nonperturbative mechanism. The Debye (screening) mass is found on the basis of a kinetic approach, and the potential is compared with Monte Carlo lattice data. In the case of the SU(2) gauge group, where the cut-off parameter has been fixed by fitting Monte Carlo data for the energy density and pressure, a very good agreement is found. The model seems to describe the SU(3) Monte Carlo data as well. However, the scarcity of data in this case does not allow us to draw very definite conclusions. At the end, we briefly discuss plasma oscillations with cut-off low-momentum modes.
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