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Infrared behavior and fixed points in Landau-gauge QCD

By Jan M. Pawlowski, Daniel F. Litim, Sergei N. Nedelko and Lorenz Johann Maria von Smekal

Abstract

We investigate the infrared behavior of gluon and ghost propagators in Landau-gauge QCD by means of an exact renormalization group equation. We explain how, in general, the infrared momentum structure of Green functions can be extracted within this approach. An optimization procedure is devised to remove residual regulator dependences. In Landau-gauge QCD this framework is used to determine the infrared leading terms of the propagators. The results support the Kugo-Ojima confinement scenario. Possible extensions are discussed.Jan M. Pawlowski, Daniel F. Litim, Sergei Nedelko, and Lorenz von Smeka

Publisher: American Physical Society
Year: 2004
DOI identifier: 10.1103/PhysRevLett.93.152002
OAI identifier: oai:digital.library.adelaide.edu.au:2440/34443
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