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Quark-gluon vertex in general kinematics

Ayse Kizilersu, Derek B. Leinweber, Jon-Ivar Skullerud, Anthony G. Williams

hep-latarXiv:hep-lat/0610078

Abstract

We compute the quark-gluon vertex in quenched lattice QCD, in the Landau gauge using an off-shell mean-field O(a)-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.

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