Nonperturbative determination of the running coupling constant in quenched SU (2)
Abstract
Through a finitesize renormalization group technique we calculate the running coupling constant for quenched SU(2) with a few percent error over a range of energy varying by a factor thirty. The definition is based on ratio of correlations of Polyakov loops with twisted boundary conditions. The extrapolation to the continuum limit is governed by corrections due to lattice artifacts which appear to be rather smooth and proportional to the square of the lattice spacing.
 Publication:

Nuclear Physics B
 Pub Date:
 February 1995
 DOI:
 10.1016/05503213(94)00478W
 arXiv:
 arXiv:heplat/9407028
 Bibcode:
 1995NuPhB.433..390D
 Keywords:

 High Energy Physics  Lattice
 EPrint:
 18 pages of ps file