High-accuracy two-loop computation of the critical mass for Wilson fermions
نویسندگان
چکیده
We have already presented at a Lattice conference [1] an algebraic algorithm that allows to apply the coordinate-space method by Lüscher and Weisz [2] to two-loop lattice integrals with gluon and Wilson-fermion propagators. In order to test the method, we have recently redone [3] a twoloop computation of the critical mass for Wilson fermions [4]. For Wilson fermions, the dressed inverse fermion propagator has the form
منابع مشابه
Two-loop critical mass for Wilson fermions
We have redone a recent two-loop computation of the critical mass for Wilson fermions in lattice QCD by evaluating Feynman integrals with the coordinate-space method. We present the results for different types of infrared regularization. We confirm both the previous numerical estimates and the power of the coordinate-space method whenever high accuracy is needed.
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