Abstract

We study the heavy quark potential for two-flavour QCD in the high-temperature chiral symmetric phase. The potential between static fermion sources has been calculated in the presence of light quarks of mass m/ T=0.1 on lattices of size 12 34 and 8 34. We find a significant increase in the screening mass over that in the pure SU(3) gauge theory. We also have analyzed the rotational symmetry of the potential and the influence of finite-lattice-size effects on the potential and other thermodynamic observables.

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