Tunneling transition to the Pomeron regime

Abstract

We point out that, in some models of small-x hard processes, the transition to the Pomeron regime occurs through a sudden tunneling effect, rather than a slow diffusion process. We explain the basis for such a feature and we illustrate it for the BFKL equation with running coupling by gluon rapidity versus scale correlation plots.

Comments: 17 pages, 5 figures, mpeg animations available from http://www.lpthe.jussieu.fr/~salam/tunneling/ . v2 includes additional references