Diffractive
Scattering and Gauge/String Duality
High-energy diffractive scattering will be discussed
based on Gauge/String duality. As shown by Brower, Polchinski, Strassler and
Tan, the ubiquitous Pomeron emerges naturally in gauge theories with
string-theoretical descriptions. Its existence is intimately tied to gluons,
and also to the energy-momentum tensor. With a confining dual background
metric, the Pomeron can be interpreted as a “massive graviton”. In a single
unified step, both its infrared and ultraviolet properties are dealt with,
reflecting confinement and conformal symmetry respectively. An effective field
theory for high-energy scattering can be constructed. Applications based on
this approach will also be described.