Running quark mass in two flavor QCD
F. Knechtli, M. Della Morte, J. Rolf, R. Sommer, I. Wetzorke, U. Wolff
Abstract
We present first results for the step scaling function sigmaP of the renormalization factor ZP of the pseudoscalar density. The simulations are performed within the framework of the Schroedinger functional with two flavors of O(a) improved Wilson fermions. The knowledge of sigmaP is required to compute the renormalization group invariant quark masses. We also study the performance of a variant of the HMC algorithm using two pseudofermion fields.
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