LATTICE ARTIFACTS IN THE NON-ABELIAN DEBYE-SCREENING MASS IN ONE-LOOPORDER

We compute the electric screening mass in lattice QCD with Wilson ferm ions at finite temperature and chemical potential to one-loop order, a nd show that lattice artifacts arising from a finite lattice spacing r esult in an enhancement of the screening mass as compared to the conti nuum. We discuss the magnitude of this enhancement as a function of th e temperature and chemical potential for lattices with a different num ber of lattice sites in the temporal direction that can be implemented in lattice simulations. Most of the enhancement is found to be due to the fermion loop contribution. [S0556-2821(97)03121-4].