Gluon propagator, triple gluon vertex and the QCD coupling constant

Details Gluon propagator, triple gluon vertex and the QCD coupling constant Gluon propagator, triple gluon vertex and the QCD coupling constant

1999-08-31

arxiv.org/abs/hep-lat/9908056v1

Nucl.Phys.Proc.Suppl.83:159-161,2000

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages, LaTeX with two figures; presented at LATTICE99

Scientific paper

We study the UV-scaling of the flavorless gluon propagator in the Landau gauge in an energy window up to 9 GeV. Dominant hypercubic lattice artifacts are eliminated. A large set of renormalization schemes is used to test asymptotic scaling. We compare with our results obtained directly from the triple gluon vertex. We end-up with \Lambda_{\bar{\rm{MS}}} = 318(12)(5) MeV and 292(5)(15) MeV respectively for these two methods, compatible which each other but significantly above the Schrodinger method estimate.

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