Two and three loops computations of renormalization constants for lattice QCD

Details Two and three loops computations of renormalization constants for lattice QCD Two and three loops computations of renormalization constants for lattice QCD

2004-09-27

arxiv.org/abs/hep-lat/0409149v1

Physics

High Energy Physics

High Energy Physics - Lattice

Lattice2004(improv), 3 pages, 4 figures

Scientific paper

10.1016/j.nuclphysbps.2004.11.27

Renormalization constants can be computed by means of Numerical Stochastic Perturbation Theory to two/three loops in lattice perturbation theory, both in the quenched approximation and in the full (unquenched) theory. As a case of study we report on the computation of renormalization constants of the propagator for Wilson fermions. We present our unquenched (N_f=2) computations and compare the results with non perturbative determinations.

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