  The phenomenology of a QCD-Pomeron model based on the exchange of a pair of
non-perturbative gluons, i.e. gluon fields with a finite correlation length in
the vacuum, is studied in comparison with the phenomenology of QCD chiral
symmetry breaking, based on non-perturbative solutions of Schwinger-Dyson
equations for the quark propagator including these non-perturbative gluon
effects. We show that these models are incompatible, and point out some
possibles origins of this problem.
