Infrared behaviour and fixed points in Landau gauge QCD

Pawlowski, Jan M, Litim, Daniel F, Nedelko, Sergei and von Smekal, Lorenz (2004) Infrared behaviour and fixed points in Landau gauge QCD. Physical Review Letters, 93 (15). pp. 152002-152005. ISSN 0031-9007

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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.

Item Type: Article
Additional Information: Collaboration co-led by Litim and Pawlowski (Erlangen node). This paper studies the non-perturbative behaviour of QCD Greens functions using new RG techniques, where signatures for confinement are detected. Our results are confirmed by recent lattice simulations, and have received wide attention. It has accrued over 90 citations.
Keywords: Infrared, Fixed points, Landau guage
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics
Depositing User: Gemma Farrell
Date Deposited: 14 Mar 2008
Last Modified: 06 Aug 2019 15:45
Google Scholar:185 Citations

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