The Lattice Free Energy with Overlap Fermions: A Two-Loop Result
A. Athenodorou, H. Panagopoulos
Abstract
We calculate the 2-loop partition function of QCD on the lattice, using the Wilson formulation for gluons and the overlap-Dirac operator for fermions. Direct by-products of our result are the 2-loop free energy and average plaquette. Our calculation serves also as a prototype for further higher loop calculations in the overlap formalism. We present our results as a function of a free parameter M0 entering the overlap action; the dependence on the number of colors N and fermionic flavors Nf is shown explicitly.
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