The Critical Mass of Wilson Fermions : A Comparison of Perturbative and Monte Carlo Results

@inproceedings{Follana2008TheCM,
title={The Critical Mass of Wilson Fermions : A Comparison of Perturbative and Monte Carlo Results},
author={Eduardo Follana and H. Panagopoulos},
year={2008}
}

We calculate the critical value of the hopping parameter, κc, in Lattice QCD with Wilson fermions, to two loops in perturbation theory. This quantity is an additive renormalization; as such, it is characterized not only by the standard caveats regarding the asymptotic nature of perturbative results, but also by a linear divergence in the lattice spacing. Consequently, our calculation tests rather stringently the limits of applicability of perturbation theory. We compare our results to non… CONTINUE READING