SU(2) Landau gluon propagator on a 140^3 lattice

Details SU(2) Landau gluon propagator on a 140^3 lattice SU(2) Landau gluon propagator on a 140^3 lattice

2003-02-26

arxiv.org/abs/hep-lat/0302022v3

Phys.Rev.D67:091502,2003

Physics

High Energy Physics

High Energy Physics - Lattice

5 pages with 2 figures and 3 tables; added a paragraph on discretization effects

Scientific paper

10.1103/PhysRevD.67.091502

We present a numerical study of the gluon propagator in lattice Landau gauge for three-dimensional pure-SU(2) lattice gauge theory at couplings beta = 4.2, 5.0, 6.0 and for lattice volumes V = 40^3, 80^3, 140^3. In the limit of large V we observe a decreasing gluon propagator for momenta smaller than p_{dec} = 350^{+ 100}_{- 50} MeV. Data are well fitted by Gribov-like formulae and seem to indicate an infra-red critical exponent kappa slightly above 0.6, in agreement with recent analytic results.

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