Symmetric point 4-point functions at one loop in QCD

Abstract

We evaluate the quartic ghost and quark Green's functions as well as the gluon-ghost, gluon-quark and ghost-quark 4-point functions of Quantum Chromodynamics at one loop at the fully symmetric point in a linear covariant gauge. Similar expressions for the analogous Green's functions in Quantum Electrodynamics are also provided.

Comments: 25 latex pages,anc directory contains txt file with electronic version of quartic vertex functions, tensor basss and the projection matrices