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Indirect lattice evidence for the refined Gribov-Zwanziger formalism and the gluon condensate⟨A2⟩in the Landau gauge

2010/02/28 by David Dudal, D. Dudal, Orlando Oliveira +3 · 174 citations
Physics and Astronomy · #Formalism (music) #Gluon #High-Energy Particle Collisions Research #Lattice (music) #Mathematical physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Propagator #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Renormalization #hep-lat #hep-ph #hep-th

paper · pdf · doi:10.1103/physrevd.81.074505

published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 81(7) (American Physical Society) · 17 pages, 10 figures, updated version, accepted for publication in Phs.Rev.D

arxiv created 2010/03/26 · openalex publication_date 2010/04/16 · arxiv updated 2010/04/22 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We consider the gluon propagator D(p2) at various lattice sizes and spacings in the case of pure SU(3) Yang-Mills gauge theories using the Landau gauge fixing. We discuss a class of fits in the infrared region in order to (in)validate the tree level analytical prediction in terms of the (refined) Gribov-Zwanziger framework. It turns out that an important role is played by the presence of the widely studied dimension two gluon condensate ⟨A2⟩. Including this effect allows to obtain an acceptable fit around 1 to 1.5 GeV, while corroborating the refined Gribov-Zwanziger prediction for the gluon propagator. We also discuss the infinite volume extrapolation, leading to the estimate D(0)=8.3\ifmmode±\else\textpm\fi0.5 GeV^\ensuremath-2. As a by-product, we can also provide the prediction ⟨g2A2⟩\ensuremath≈3 GeV2 obtained at the renormalization scale \ensuremathμ=10 GeV.

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