Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2007-10-23
PoSLAT2007:217,2007
Physics
High Energy Physics
High Energy Physics - Lattice
Lattice contribution
Scientific paper
We present results from a detailed study of singlet free energies in full QCD with realistic quark masses. An improved scheme for the non-perturbative renormalization of the Polyakov loop is used and we compare its temperature dependence for QCD with different flavor content. We also analyze screening masses extracted from singlet free energies at various temperatures close to and above the QCD transition temperature. We conclude that the temperature dependence of screening masses is well described by perturbation theory up to a non-perturbative pre-factor. An effective running coupling has been determined for all temperature values giving additional insight into screening phenomena at high temperature.
for the RBC-Bielefeld Collaboration
Petrov Konstantin
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