Large cutoff effects of dynamical Wilson fermions
R. Sommer, S. Aoki, M. Della Morte, R. Hoffmann, T. Kaneko, F., Knechtli, J. Rolf, I. Wetzorke, U. Wolff
TL;DR
This paper investigates the significant cutoff effects observed in dynamical Wilson fermions, analyzing their impact on PCAC masses and the mass dependence of r_0 in full QCD, with implications for chiral perturbation theory comparisons.
Contribution
It provides a detailed analysis of cutoff effects in dynamical Wilson fermions and discusses methods for computing mass dependences relevant to chiral perturbation theory.
Findings
Large cutoff effects observed in PCAC masses
Significant mass dependence of r_0 in full QCD
Implications for chiral perturbation theory comparisons
Abstract
We present and discuss results for cutoff effects in the PCAC masses and the mass dependence of r_0 for full QCD and various fermion actions. Our discussion of how one computes mass dependences - here of r_0 - is also relevant for comparisons with chiral perturbation theory.
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