Two and three loops computations of renormalization constants for lattice QCD

F. Di Renzo; A. Mantovi; V. Miccio; L. Scorzato; C. Torrero

doi:10.1016/j.nuclphysbps.2004.11.275

Two and three loops computations of renormalization constants for lattice QCD

High Energy Physics - Lattice 2009-11-10 v1

Authors: F. Di Renzo , A. Mantovi , V. Miccio , L. Scorzato , C. Torrero

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Abstract

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.

Keywords

renormalization constants lattice QCD numerical stochastic perturbation theory Wilson fermions propagator unquenched quenched approximation

Cite

@article{arxiv.hep-lat/0409149,
  title  = {Two and three loops computations of renormalization constants for lattice QCD},
  author = {F. Di Renzo and A. Mantovi and V. Miccio and L. Scorzato and C. Torrero},
  journal= {arXiv preprint arXiv:hep-lat/0409149},
  year   = {2009}
}

Comments

Lattice2004(improv), 3 pages, 4 figures

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