RT Journal Article
T1 On the leading OPE corrections to the ghost-gluon vertex and the Taylor theorem
A1 Boucaud, Ph.
A1 Dudal, D.
A1 Leroy, J. P.
A1 Pène, O.
A1 Rodríguez Quintero, José
AB 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. We prove these corrections to give account of current SU(2) lattice data for the vertex with different kinematical configurations in the domain of intermediate momenta, roughly above 2-3 GeV. We pay special attention to the kinematical limit which the bare vertex takes for its tree-level expression at any perturbative order, according to the well-known Taylor theorem. Based on our OPE analysis, we also present a simple model for the vertex, in acceptable agreement with the lattice data also in the IR domain.
PB Springer Verlag
SN 1029-8479
YR 2011
FD 2011
LK http://hdl.handle.net/10272/10495
UL http://hdl.handle.net/10272/10495
LA eng
NO Boucaud, Ph., Dudal, D., Leroy, J.P., Pène, O., Rodríguez Quintero, J.: "On the leading OPE corrections to the ghost-gluon vertex and the Taylor theorem". Journal of High Energy Physics. Vol. 2011, n. 12, (2011). ISSN 1029-8479
NO J. R-Q acknowledges the Spanish MICINN for the support by the research project FPA2009-10773 and "Junta de Andalucia" by P07FQM02962. D. Dudal is supported by the Research-Foundation Flanders (FWO Vlaanderen). We thank A. Le Yaouanc, J. Micheli and A. Cucchieri for inspiring discussions, while J. R-Q acknowledges A. C. Aguilar and J. Papavassiliou for very valuable indications triggering the work.
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026