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The Landau gauge gluon and ghost propagators in 4D SU(3) gluodynamics in large lattice volume | | I.L. Bogolubsky
; E.-M. Ilgenfritz
; M. Müller-Preussker
; A. Sternbeck
; | | Date: |
10 Oct 2007 | | Abstract: | We present recent results of the Landau gauge gluon and ghost propagators in
SU(3) pure gauge theory at Wilson eta=5.7 for lattice sizes up to 80^4
corresponding to physical volumes up to (13.2 fm)^4. In particular, we focus on
finite-volume and Gribov copy effects. We employ a gauge fixing method that
combines a simulated annealing algorithm with finalizing overrelaxation. We
find the gluon propagator for the largest volumes and at q^2 ~ 0.01 GeV^2 to
become flat. Although not excluded by our data, there is still no clear
indication of a gluon propagator tending towards zero in the zero-momentum
limit. New data for the ghost propagator are reported, too. | | Source: | arXiv, 0710.1968 | | Services: | Forum | Review | PDF | Favorites | |
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