A DEFINITION OF THE RUNNING COUPLING-CONSTANT IN A TWISTED SU(2) LATTICE GAUGE-THEORY

Authors
DEDIVITIIS GM FREZZOTTI R GUAGNELLI M PETRONZIO R
Citation
Gm. Dedivitiis et al., A DEFINITION OF THE RUNNING COUPLING-CONSTANT IN A TWISTED SU(2) LATTICE GAUGE-THEORY, Nuclear physics. B, 422(1-2), 1994, pp. 382-396
Citations number
26
Categorie Soggetti
Physics, Nuclear
Journal title
Nuclear physics. B → ACNP
ISSN journal
05503213
Volume
422
Issue
1-2
Year of publication
1994
Pages
382 - 396
Database
ISI
SICI code
0550-3213(1994)422:1-2<382:ADOTRC>2.0.ZU;2-H
Abstract
We propose a novel definition of the running coupling constant in a qu enched SU(2) lattice gauge theory with twisted boundary conditions sui table for non-perturbative numerical simulations. It is based on the c orrelation of Polyakov loops extended in a twisted direction at a dist ance which is a fixed fraction of the total lattice size. We make the perturbative calculation which connects this definition to standard re gularization schemes. We find LAMBDA(twisted Polyakov)/LAMBDA(MSBAR) = 1.6136(2).