Eur. Phys. J. C (2007) 50: 871-875
https://doi.org/10.1140/epjc/s10052-007-0250-6

Regular Article - Theoretical Physics

Quark–gluon vertex in general kinematics

¹ Centre for the Subatomic Structure of Matter, Adelaide University, Adelaide, SA, 5005, Australia
² School of Mathematics, Trinity College, Dublin 2, Ireland

^* e-mail: jonivar@skullerud.name

Received: 10 October 2006
Revised: 30 January 2007
Published online: 13 March 2007

Abstract

We compute the quark–gluon vertex in quenched lattice QCD in the Landau gauge, using an off-shell mean-field -improved fermion action. The Dirac-vector part of the vertex is computed for arbitrary kinematics. We find a substantial infrared enhancement of the interaction strength regardless of the kinematics.