Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2009-12-21
Eur. Phys. J. C68:183-195, 2010; Eur.Phys.J.C68:183-195,2010
Physics
High Energy Physics
High Energy Physics - Lattice
14 pages, 22 figures; minor changes, matches version to appear in Eur. Phys. J. C
Scientific paper
10.1140/epjc/s10052-010-1306-6
We study the strong-coupling limit beta=0 of lattice SU(2) Landau gauge Yang-Mills theory. In this limit the lattice spacing is infinite, and thus all momenta in physical units are infinitesimally small. Hence, the infrared behavior can be assessed at sufficiently large lattice momenta. Our results show that at the lattice volumes used here, the Gribov ambiguity has an enormous effect on the ghost propagator in all dimensions. This underlines the severity of the Gribov problem and calls for refined studies also at finite beta. In turn, the gluon propagator only mildly depends on the Gribov ambiguity.
Maas Axel
Pawlowski Jan M.
Smekal Lorenz von
Spielmann Daniel
Sternbeck André
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