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Using the AdS/CFT correspondence, we study the high-energy behavior ofscattering amplitudes in N=4 SYM gauge theory for dipole-dipole soft elasticscattering, described in the Wilson-loop correlator formalism. The amplitudesare evaluated in the dual picture, at large impact-parameter, by consideringthe exchange of supergravity fields between certain minimal surfaces inEuclidean AdS_5, and performing the appropriate analytic continuation toMinkowskian signature. The purely elastic behavior at large impact-parameter isthen combined with the unitarity constraint in the central region, in order toderive an absolute bound on the high-energy behavior of the dipole-dipole totalcross section. The possibility to obtain a stronger bound by assuming a largerdomain of validity for the AdS/CFT result is also discussed.

High-energy bounds on total cross sections in N=4 SYM from AdS/CFT