Regge Limits from SCET

by Gregory Ridgway (MIT)



The regge limit of QCD and related gauge theories allows us to learn about the all-orders behavior of interacting QFT. The recently developed Glauber SCET gives us novel information about this limit, providing organizational structures that are not apparent in other formalisms. This allows us to resolve open puzzles of how to organize the dynamics of multi-gluon exchange, and enables us to clearly separate such contributions from non-planar corrections to the Regge trajectory. We apply our formalism to provide a new proof of planar reggeization, derive relations between one loop diagrams and two loop anomalous dimensions, provide an operator definition of the regge trajectory, and derive the leading non-planar correction to the regge trajectory in N=4SYM.