Non perturbative determination of the running coupling constant in quenched SU(2)

Details Non perturbative determination of the running coupling constant in quenched SU(2) Non perturbative determination of the running coupling constant in quenched SU(2)

1994-07-29

arxiv.org/abs/hep-lat/9407028v1

Nucl.Phys. B433 (1995) 390-402

Physics

High Energy Physics

High Energy Physics - Lattice

18 pages of ps file

Scientific paper

10.1016/0550-3213(94)00478-W

Through a finite size 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 are proportional to the square of the lattice spacing and appears rather smooth.

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