Power corrections and perturbative coupling from lattice gauge thoeries

Details Power corrections and perturbative coupling from lattice gauge thoeries Power corrections and perturbative coupling from lattice gauge thoeries

1997-09-24

arxiv.org/abs/hep-lat/9709105v1

Nucl.Phys.Proc.Suppl. 63 (1998) 805-807

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages, 2 figures. Talk given at the Lattice97 conference, Edinburgh, UK

Scientific paper

10.1016/S0920-5632(97)00906-7

From the analysis of the perturbative expansion of the lattice regularized
gluon condensate, toghether with MC data, we present evidence of OPE-unexpected
dim-2 power corrections in the scaling behaviour of the Wilson loop. These can
be interpreted as an indication that in lattice gauge theories the running
coupling at large momentum contains contributions of order Q^2.

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