Infrared Behavior and Fixed Points in Landau-Gauge QCD

Jan M. Pawlowski, Daniel F. Litim, Sergei Nedelko, and Lorenz von Smekal
Phys. Rev. Lett. 93, 152002 – Published 7 October 2004

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.

  • Figure
  • Received 8 January 2004

DOI:https://doi.org/10.1103/PhysRevLett.93.152002

©2004 American Physical Society

Authors & Affiliations

Jan M. Pawlowski1, Daniel F. Litim2, Sergei Nedelko1,3, and Lorenz von Smekal1

  • 1Institut für Theoretische Physik III, Universität Erlangen, Staudtstraße 7, 91058 Erlangen, Germany
  • 2Theory Division, CERN, CH-1211 Geneva 23 and SPA, University of Southampton, Southampton SO17 1BJ, United Kingdom
  • 3BLTP, JINR, 141980 Dubna, Russia

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Issue

Vol. 93, Iss. 15 — 8 October 2004

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