We present data from the ALPHA Collaboration about lattice calculation of SU(2) pure--gauge running coupling constant, obtained with two different definitions of the coupling itself, which show universality of the continuum limit and clarify the applicability of renormalized perturbation theory.
@article{arxiv.hep-lat/9411035,
title = {Universal behaviour of the SU(2) running coupling constant in the continuum limit},
author = {Marco Guagnelli},
journal= {arXiv preprint arXiv:hep-lat/9411035},
year = {2009}
}
Comments
3 pages, postscript, contribution to LAT94 also available at http://sutova.roma2.infn.it/preprints/TovApe/lat94m.ps (eq. (3) corrected)