A field-theoretic study of the Regge-eikonal model. II |
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Authors: | Jochen Bartels |
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Affiliation: | National Accelerator Laboratory, Batavia, Illinois 60510 USA |
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Abstract: | A previous study of the Regge-eikonal model in φ3 is extended to QED. First we define a reggeon amplitude that is built up by tower diagrams, and then study multiregge exchange by use of Gribov's reggeon calculus. The situation is essentially the same as in φ3: The eikonal approximation is the true high-energy and weak coupling limit (s → ∞, α ln s = fixed), but it breaks down outside of the weak-coupling limit. This confirms that the eikonal approximation as a model for Regge-cuts is not justifiable by field-theoretic arguments because of the neglect of inelastic intermediate states. |
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