PhysRevLett.93.152002.pdf (104.85 kB)
Infrared behaviour and fixed points in Landau gauge QCD
Version 2 2023-06-12, 06:35
Version 1 2023-06-07, 14:35
journal contributionposted on 2023-06-12, 06:35 authored by Jan M Pawlowski, Daniel LitimDaniel Litim, Sergei Nedelko, Lorenz von Smekal
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.
- Published version
JournalPhysical Review Letters
PublisherAmerican Physical Society
Department affiliated with
- Physics and Astronomy Publications
NotesCollaboration 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.
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