The SU(3) running coupling from lattice gluons
arXiv:hep-lat/9411085
Abstract
We provide numerical results for the running coupling in Yang-Mills theory as determined from an analysis of lattice two and three-point gluon correlation functions. The coupling is evaluated directly, from first principles, by defining suitable renormalisation constants from the lattice triple gluon vertex and gluon propagator. For momenta larger than 2 GeV, the coupling is found to run according to the 2-loop asymptotic formula. The influence of lattice artifacts on the results appears negligible within the precision of our measurements, although further work on this point is in progress.
arXiv comment3 pages, uuencoded PostScript file, to appear in the Proceedings of the 1994 Symposium on Lattice Field Theory