A definition of the running coupling constant in a twisted SU(2) lattice gauge theory
arXiv:hep-lat/9312085 · doi:10.1016/0550-3213(94)00126-X
Abstract
We propose a definition of the running coupling constant in a SU(2) lattice gauge theory with twisted boundary conditions. It is based on the correlation of Polyakov loops extended in a twisted direction at a distance which is a fixed fraction of the totale lattice size. We make the perturbative calculation which connects this definition to standard regularization schemes. We find Lambda_Twisted-Polyakov/Lambda_MSbar = 1.6136(2).
19 postscript pages