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The Infrared Behaviour of the Running Coupling in Landau Gauge QCD | | R. Alkofer
; C. S. Fischer
; L. von Smekal
; | | Date: |
13 May 2002 | | Journal: | Acta Phys.Slov. 52 (2002) 191 | | Subject: | hep-ph | | Abstract: | Approximate solutions for the gluon and ghost propagators as well as the running coupling in Landau gauge Yang-Mills theories are presented. These propagators obtained from the corresponding Dyson-Schwinger equations are in remarkable agreement with those of recent lattice calculations. The resulting running coupling possesses an infrared fixed point, $alpha_S(0) = 8.92/N_c$ for all gauge groups SU($N_c$). Above one GeV the running coupling rapidly approaches its perturbative form. | | Source: | arXiv, hep-ph/0205125 | | Services: | Forum | Review | PDF | Favorites | |
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