RT Journal Article
T1 Ghost dynamics in the soft gluon limit
A1 Aguilar, A. C.
A1 Ambrósio, C. O.
A1 Soto Borrero, Feliciano Carlos de
A1 Ferreira, M. N.
A1 Oliveira, B. M.
A1 Papavassiliou, J.
A1 Rodríguez Quintero, José
AB We present a detailed study of the dynamics associated with the ghost sector of quenched QCD in the Landau gauge, where the relevant dynamical equations are supplemented with key inputs originating from large-volume lattice simulations. In particular, we solve the coupled system of Schwinger-Dyson equations that governs the evolution of the ghost dressing function and the ghost-gluon vertex, using as input for the gluon propagator lattice data that have been cured from volume and discretization artifacts. In addition, we explore the soft gluon limit of the same system, employing recent lattice data for the three-gluon vertex that enters in one of the diagrams defining the Schwinger-Dyson equation of the ghost-gluon vertex. The results obtained from the numerical treatment of these equations are in excellent agreement with lattice data for the ghost dressing function, once the latter have undergone the appropriate scale-setting and artifact elimination refinements. Moreover, the coincidence observed between the ghost-gluon vertex in general kinematics and in the soft gluon limit reveals an outstanding consistency of physical concepts and computational schemes.
PB American Physical Society
SN 2470-0010
SN 2470-0029 (electrónico)
YR 2021
FD 2021
LK http://hdl.handle.net/10272/20458
UL http://hdl.handle.net/10272/20458
LA eng
NO Aguilar, A. C., Ambrósio, C. O., Soto, F. de, Ferreira, M. N., Oliveira, B. M., Papavassiliou, J., Rodríguez Quintero, J.: "Ghost dynamics in the soft gluon limit".  Physical Review D. Vol. 104, 054028. DOI: 10.1103/PhysRevD.104.054028
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026