  In this paper we proceed with the study of the Pomeron spectrum, by solving
numerically the BFKL equation with massive gluons and running coupling. The
spectrum of Regge singularities is discrete and the leading Pomeron has a
considerable dependence on nonperturbative effects, for which we use Higgs
mechanism as a model. We cross-checked this result with variational method and
confirmed the infrared sensitivity of leading Pomeron. This fact is related to
the infrared instability of the BFKL equation in QCD, with a running coupling.
The subleading poles have a mild sensitivity to the soft physics, and are well
described by known semiclassical methods. We also discuss the dependence on
various prescriptions of the running coupling arguments.
