Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
1993-12-28
Nucl.Phys. B422 (1994) 382-396
Physics
High Energy Physics
High Energy Physics - Lattice
19 postscript pages
Scientific paper
10.1016/0550-3213(94)00126-X
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).
de Divitiis Giulia M.
Frezzotti Roberto
Guagnelli Marco
Petronzio Roberto
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