Quark-gluon vertex in general kinematics
Ayse Kizilersu, Derek B. Leinweber, Jon-Ivar Skullerud, Anthony G., Williams
TL;DR
This paper presents a lattice QCD calculation of the quark-gluon vertex in Landau gauge, revealing significant infrared enhancement of the interaction strength across various kinematics.
Contribution
It provides the first detailed lattice computation of the quark-gluon vertex in general kinematics with an off-shell improved fermion action.
Findings
Infrared enhancement of the interaction strength observed
Vertex computed for arbitrary kinematics
Results consistent across different momentum configurations
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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