Unity of pomerons from gauge/string duality

Understand

We develop a formalism where the hard and soft pomeron contributions to high energy scattering arise as leading Regge poles of a single kernel in holographic QCD.

• The kernel is obtained using effective field theory inspired by Regge theory of a 5-d string theory.
• It describes the exchange of higher spin fields in the graviton Regge trajectory that are dual to glueball states of twist two.
• For a specific holographic QCD model we describe Deep Inelastic Scattering in the Regge limit of low Bjorken x, finding good agreement with experimental data from HERA.