Separating perturbative and non-perturbative contributions to the plaquette

Details Separating perturbative and non-perturbative contributions to the plaquette Separating perturbative and non-perturbative contributions to the plaquette

2001-10-29

arxiv.org/abs/hep-lat/0110210v1

Nucl.Phys.Proc.Suppl.106:870-872,2002

Physics

High Energy Physics

High Energy Physics - Lattice

Latex, 3 pages, 5 figures. Lattice2001(gaugetheories)

Scientific paper

10.1016/S0920-5632(01)01870-9

We try to separate the perturbative and non-perturbative contributions to the plaquette of pure SU(3) gauge theory. To do this we look at the large-n asymptotic behaviour of the perturbation series in order to estimate the contribution of the as-yet uncalculated terms in the series. We find no evidence for the previously reported Lambda^2 contribution to the gluon condensate. Attempting to determine the conventional Lambda^4 condensate gives a value of approximately 0.03(2) GeV^4, in reasonable agreement with sum rule estimates, though with very large uncertainties.

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