137 citations · 1.2k across the 46 of their papers we have counts for
22 papers · 1 filter
Schwinger mechanism for gluons from lattice QCD
A. C. Aguilar, F. De Soto, M. N. Ferreira +4
Continuum and lattice analyses have revealed the existence of a mass-scale in the gluon two-point Schwinger function. It has long been conjectured that this expresses the action of…
Lattice three-gluon vertex in extended kinematics: planar degeneracy
F. Pinto-Gómez, F. De Soto, M. N. Ferreira +2
We present novel results for the three-gluon vertex, obtained from an extensive quenched lattice simulation in the Landau gauge. The simulation evaluates the transversely projected…
Emergence of pion parton distributions
Z. -F. Cui, M. Ding, J. M. Morgado +7
Supposing only that there is an effective charge which defines an evolution scheme for parton distribution functions (DFs) that is all-orders exact, strict lower and upper bounds o…
Effective charge from lattice QCD
Zhu-Fang Cui, Jin-Li Zhang, Daniele Binosi +7
Using lattice configurations for quantum chromodynamics (QCD) generated with three domain-wall fermions at a physical pion mass, we obtain a parameter-free prediction of QCD's reno…
On the zero crossing of the three-gluon vertex
A. Athenodorou, D. Binosi, Ph. Boucaud +4
We report on new results on the infrared behaviour of the three-gluon vertex in quenched Quantum Chormodynamics, obtained from large-volume lattice simulations. The main focus of o…
Gluon Green functions free of Quantum fluctuations
A. Athenodorou, Ph. Boucaud, F. De Soto +2
This letter reports on how the Wilson flow technique can efficaciously kill the short-distance quantum fluctuations of 2- and 3-gluon Green functions, removes the sca…
Three-gluon running coupling from lattice QCD at : a consistency check of the OPE approach
Ph. Boucaud, M. Brinet, F. De Soto +4
We present a lattice calculation of the renormalized running coupling constant in symmetric (MOM) and asymmetric () momentum substraction schemes including …
High statistics determination of the strong coupling constant in Taylor scheme and its OPE Wilson coefficient from lattice QCD with a dynamical charm
B. Blossier, Ph. Boucaud, M. Brinet +5
This paper reports on the determination of from lattice simulations with 2+1+1 twisted-mass dynamical flavours {\it via} the computation of the ghost-gluon coupling renormali…
Testing the OPE Wilson coefficient for from lattice QCD with a dynamical charm
B. Blossier, Ph. Boucaud, M. Brinet +5
Gluon and ghost propagators data, obtained in Landau gauge from lattice simulations with two light and two heavy dynamical quark flavours (=2+1+1), are described here with a r…
The strong running coupling at and mass scales from lattice QCD
B. Blossier, Ph. Boucaud, M. Brinet +6
This letter reports on the first computation, from data obtained in lattice QCD with and quarks in the sea, of the running strong coupling via the ghost-gluon coupling…
A Ghost Story II: Ghosts, Gluons and the Gluon condensate beyond the IR of QCD
J. Rodríguez-Quintero, Ph. Boucaud, F. De Soto +4
Beyond the deep IR, the analysis of ghost and gluon propagators still keeps very interesting non-perturbative information. The Taylor-scheme coupling can be computed and applied to…
Ghost-gluon running coupling, power corrections and the determination of
Ph. Boucaud, F. De Soto, J. P. Leroy +4
We compute a formula including OPE power corrections to describe the running of a QCD coupling non-perturbatively defined through the ghost and gluon dressing functions. This turns…
Are the low-momentum gluon correlations semiclassically determined?
Ph. Boucaud, F. De Soto, A. Le Yaouanc +1
We argue that low-energy gluodynamics can be explained in terms of semi-classical Yang-Mills solutions by demonstrating that lattice gluon correlation functions fit to instanton li…
Modified instanton profile effects from lattice Green functions
Ph. Boucaud, F. De Soto, A. Le Yaouanc +4
We trace here instantons through the analysis of pure Yang-Mills gluon Green functions in the Landau gauge for a window of IR momenta (0.4 GeV GeV). We present lattice…
The strong coupling constant at small momentum as an instanton detector
Ph. Boucaud, F. De Soto, A. Le Yaouanc +5
We present a study of at small p computed from the lattice. It shows a dramatic law which can be understood within an instanton liquid model. In this fra…
O.P.E. and Power Corrections to the QCD coupling constant
Ph. Boucaud, F. De Soto, A. Donini +6
Lattice data seems to show that power corrections should be convoked to describe appropriately the transition of the QCD coupling constant running from U.V. to I.R. domains. Those…
An Instanton Picture O.P.E. <A^2> Condensate?
Ph. Boucaud, F. De Soto, A. Donini +6
Gluon two- and three-point Green Functions computed in Landau gauge from the lattice show the existence of power corrections to the purely perturbative expressions, that can be exp…
A transparent expression of the A^2-Condensate's renormalisation
Ph. Boucaud, F. De Soto, A. Le Yaouanc +5
We give a more transparent understanding of the vacuum expectation value of the renormalised local operator A^2 by relating it to the gluon propagator integrated over the momentum.…
OPE and Powers corrections on the QCD coupling constant
Ph. Boucaud, F. De Soto, A. Donini +6
The running coupling constant can be estimated by computing gluon two- and three-point Green functions from the lattice. Computing in lattice implies working in a fixed gauge secto…
Instantons and Condensate
Ph. Boucaud, J. P. Leroy, A. Le Yaouanc +6
We argue that the condensate found in the Landau gauge on lattices, when an Operator Product Expansion of Green functions is performed, might be explained by inst…
Power Corrections to Perturbative QCD and OPE in Gluon Green Functions
D. Becirevic, Ph. Boucaud, F. De Soto +6
We show that QCD Green functions in Landau Gauge exhibit sizable corrections to the expected perturbative behavior at energies as high as 10 GeV. We argue that these are…
Remarks on the determination of the Landau gauge OPE for the Asymmetric three gluon vertex
F. De Soto, J. Rodríguez-Quintero
We compute a compact OPE formula describing power corrections to the perturbative expression for the asymmetric -renormalized running coupling constant up to the l…