RT Journal Article
T1 Gluon propagator and three-gluon vertex with dynamical quarks
A1 Aguilar, A. C.
A1 Soto Borrero, Feliciano Carlos de
A1 Ferreira, M. N.
A1 Papavassiliou, J.
A1 Rodríguez Quintero, José
A1 Zafeiropoulos, S.
AB We present a detailed analysis of the kinetic andmass terms associated with the Landau gauge gluon propagatorin the presence of dynamical quarks, and a comprehensivedynamical study of certain special kinematic limits of thethree-gluon vertex. Our approach capitalizes on results fromrecent lattice simulations with (2+1) domain wall fermions,a novel nonlinear treatment of the gluon mass equation, andthe nonperturbative reconstruction of the longitudinal threegluonvertex from its fundamental Slavnov–Taylor identities.Particular emphasis is placed on the persistence of thesuppression displayed by certain combinations of the vertexform factors at intermediate and low momenta, alreadyknown from numerous pure Yang–Mills studies. One of ourcentral findings is that the inclusion of dynamical quarksmoderates the intensity of this phenomenon only mildly,leaving the asymptotic low-momentum behavior unaltered,but displaces the characteristic “zero crossing” deeper intothe infrared region. In addition, the effect of the three-gluonvertex is explored at the level of the effective gauge coupling,whose size is considerably reduced with respect to itscounterpart obtained from the ghost-gluon vertex. The mainupshot of the above considerations is the further confirmationof the tightly interwoven dynamics between the two- andthree-point sectors of QCD.
PB Springer Open
SN 1434-6044
YR 2020
FD 2020-02
LK http://hdl.handle.net/10272/17670
UL http://hdl.handle.net/10272/17670
LA eng
NO Aguilar, A. C., De Soto, F., Ferreira, M. N., Papavassiliou, J., Rodríguez Quintero, J.,  Zafeiropoulos, S. (2020). Gluon propagator and three-gluon vertex with dynamical quarks. The European Physical Journal C, 80(2). DOI: https://doi.org/10.1140/epjc/s10052-020-7741-0
NO We are very grateful to Ph. Boucaud for his crucial help in obtaining the numerical data, during the early stages of this project, and to the RBC/UKQCD collaboration, especially P. Boyle, N. Christ, Z. Dong, C. Jung, N. Garron, B. Mawhinney and O. Witzel, for access to the lattice configurations employed herein. Our lattice calculations benefited from the following resources: CINES, GENCI, IDRIS (Project ID 52271); and the IN2P3 Computing Facility. This work is supported by the Spanish Ministry of Economy and Competitiveness (MINECO) under Grants FPA2017-84543P (J.P.) and FPA2017-86380-P (J.R.-Q. and F.S.). J.P. also acknowledges the Generalitat Valenciana for the grant Prometeo/2019/087. The work of A.C.A. and M.N.F. is supported by the Brazilian National Council for Scientific and Technological Development (CNPq) under the Grants 305815/2015, 142226/2016-5, and 464898/2014-5 (INCT-FNA). A.C.A. also acknowledges the financial support from Sao Paulo Research Foundation (FAPESP) through the project 2017/05685-2.
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026