2008/11/13 by Ph. Boucaud, F. De Soto, J. P. Leroy +5 · 5 citations
Mathematics · Physics and Astronomy · #Algorithm #Computation #Coupling (piping) #Coupling constant #Gluon #High-Energy Particle Collisions Research #Lambda #Lattice (music) #Lattice QCD #Lattice field theory #Materials science #Mathematics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #hep-ph
paper · pdf · doi:10.1103/physrevd.79.014508
published as Phys.Rev.D79:014508,2009
arxiv created 2008/11/13 · openalex publication_date 2009/01/23 · arxiv updated 2010/03/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We compute a formula including operator-product expansion power corrections to describe the running of a QCD coupling nonperturbatively defined through the ghost and gluon dressing functions. This turns out to be rather accurate. We propose the ``plateau'' procedure to compute \ensuremathΛ_MS from the lattice computation of the running coupling constant. We show a good agreement between the different methods which have been used to estimate \ensuremathΛ_MS^Nf=0. We argue that \ensuremathΛ_MS or the strong coupling constant computed with different lattice spacings may be used to estimate the lattice spacing ratio.