O(a) improved lattice QCD
Rainer Sommer
Abstract
We review the O(a) improvement of lattice QCD with special emphasis on the motivation for performing the improvement programme non-perturbatively and the general concepts of on-shell improvement. The present status of the calculations of various improvement coefficients (perturbative and non-perturbative) is reviewed, as well as the computation of the isospin current normalization constants ZA and ZV. We comment on recent results for hadronic observables obtained in the improved theory.
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