Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1993-02-22
Physics
High Energy Physics
High Energy Physics - Theory
LaTeX-file, 23 pages, no figures, This is a revised and extended version of hep-th 9302104
Scientific paper
Previous studies of high-energy scattering in QCD have shown a remarkable correspondence with two-dimensional field theory. In this paper we formulate a simple effective model in which this two-dimensional nature of the interactions is manifest. Starting from the (3+1)-dimensional Yang-Mills action, we implement the high energy limit $s\! >\! > \! t$ via a scaling argument and we derive from this a simplified effective theory. This effective theory is still (3+1)-dimensional, but we show that its interactions can to leading order be summarized in terms of a two-dimensional sigma-model defined on the transverse plane. Finally, we verify that our formulation is consistent with known perturbative results. This is a revised and extended version of hep-th 9302104. In particular, we have added a section that clarifies the connection with Lipatov's gluon emission vertex.
Verlinde Erik
Verlinde Herman
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