235 citations · 3.4k across the 102 of their papers we have counts for
35 papers · 1 filter
The strong running coupling from the gauge sector of Domain Wall lattice QCD with physical quark masses
S. Zafeiropoulos, Ph. Boucaud, F. De Soto +2
We report on the first computation of the strong running coupling at the physical point (physical pion mass) from the ghost-gluon vertex, computed from lattice simulations with thr…
Discretization effects on renormalized gauge-field Green's functions, scale setting and gluon mass
Ph. Boucaud, F. De Soto, K. Raya +2
The gauge-field propagators computed from the lattice have been exhaustively used in the investigation of the low-momentum dynamics of QCD, in a judicious interplay with re…
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…
On the leading OPE corrections to the ghost-gluon vertex and the Taylor theorem
Ph. Boucaud, D. Dudal, J. P. Leroy +2
This brief note is devoted to a study of genuine non-perturbative corrections to the Landau gauge ghost-gluon vertex in terms of the non-vanishing dimension-two gluon condensate. W…
The Infrared Behaviour of the Pure Yang-Mills Green Functions
Ph. Boucaud, J. P. Leroy, A. Le Yaouanc +3
We review the infrared properties of the pure Yang-Mills correlators and discuss recent results concerning the two classes of low-momentum solutions for them reported in literature…
Renormalisation of quark propagators from twisted-mass lattice QCD at =2
B. Blossier, Ph. Boucaud, M. Brinet +6
We present results concerning the non-perturbative evaluation of the renormalisation constant for the quark field, , from lattice simulations with twisted mass quarks and thre…
The low-momentum ghost dressing function and the gluon mass
José Rodríguez-Quintero
We study both regular (the zero-momentum ghost dressing function not diverging), also named decoupling, and critical (diverging), also named scaling, Yang-Mills propagators solutio…
The low-momentum ghost dressing function and the gluon mass
Ph. Boucaud, M. E. Gómez, J. P. Leroy +4
We study the low-momentum ghost propagator Dyson-Schwinger equation (DSE) in Landau gauge, assuming for the truncation a constant ghost-gluon vertex, as it is extensively done, and…
A Ghost Story: Ghosts and Gluons in the IR regime of QCD
O. Pène, Ph. Boucaud, J. P. Leroy +3
We discuss the different methods to obtain reliable informations about the deep infra-red behaviour of the gluon and ghost Green functions in QCD. We argue that a clever combinatio…
Gribov's horizon and the ghost dressing function
Ph. Boucaud, J. P. Leroy, A. Le Yaouanc +3
We study a relation recently derived by K. Kondo at zero momentum between the Zwanziger's horizon function, the ghost dressing function and Kugo's functions and . We agree w…
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…
On the IR behaviour of the Landau-gauge ghost propagator
Ph. Boucaud, J. P. Leroy, A. Le Yaouanc +3
We examine analytically the ghost propagator Dyson-Schwinger Equation (DSE) in the deep IR regime and prove that a finite ghost dressing function at vanishing momentum is an altern…
IR finiteness of the ghost dressing function from numerical resolution of the ghost SD equation
Ph. Boucaud, J-P. Leroy, A. Le Yaouanc +3
We solve numerically the Schwinger-Dyson (SD hereafter) ghost equation in the Landau gauge for a given gluon propagator finite at k=0 (alpha_gluon=1) and with the usual assumption…
Constraints on the IR behaviour of gluon and ghost propagator from Ward-Slavnov-Taylor identities
Ph. Boucaud, J. P. Leroy, A. Le Yaouanc +5
We consider the constraints of the Slavnov-Taylor identity of the IR behaviour of gluon and ghost propagators and their compatibility with solutions of the ghost Dyson-Schwinger eq…
The Infrared Behaviour of the Pure Yang-Mills Green Functions
Ph. Boucaud, J. P. Leroy, A. Le Yaouanc +5
We study the infrared behaviour of the pure Yang-Mills correlators using relations that are well defined in the non-perturbative domain. These are the Slavnov-Taylor identity for t…
Instanton traces in lattice gluon correlation functions
Ph. Boucaud, F. De Soto, A. Le Yaouanc +4
Strong coupling constant computed in Landau gauge and MOM renormalization scheme from lattice two and three gluon Green Functions exhibits an unexpected behavior in the deep IR, sh…
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…