Abstract
We calculate the Debye mass for the screening of the heavy quark potential in a plasma of massless quarks coupled to the temporal gluon background governed by the Polyakov loop potential within the PNJL model in RPA approximation. We give a physical motivation for a recent phenomenological fit of lattice data by applying the calculated Debye mass with its suppression in the confined phase due to the Polyakov loop to a description of the temperature dependence of the singlet free energy for QCD with a heavy quark pair at infinite separation. We compare the result to lattice data.
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Jankowski, J., Blaschke, D. Debye mass and heavy quark potential in a PNJL quark plasma. Phys. Atom. Nuclei 75, 882–884 (2012). https://doi.org/10.1134/S1063778812060178
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DOI: https://doi.org/10.1134/S1063778812060178