High energy QCD from Planckian scattering in AdS and the Froissart bound

TL;DR

This paper investigates high energy QCD scattering using AdS/CFT duality, demonstrating black hole formation in AdS as a mechanism for saturating the Froissart bound, thus linking gravity and unitarity in QCD.

Contribution

It provides a novel analysis of high energy QCD scattering regimes via gravitational shockwaves in AdS, establishing black hole creation as a saturation mechanism for the Froissart bound.

Findings

Black hole formation in AdS corresponds to saturation of the Froissart bound.

Gravity duals reproduce key features of high energy QCD scattering.

Black hole creation signals unitarity preservation at high energies.

Abstract

We reanalyze high energy QCD scattering regimes from scattering in cut-off AdS via gravity-gauge dualities (a la Polchinski-Strassler). We look at 't Hooft scattering, Regge behaviour and black hole creation in AdS. Black hole creation in the gravity dual is analyzed via gravitational shockwave collisions. We prove the saturation of the QCD Froissart unitarity bound, corresponding to the creation of black holes of AdS size, as suggested by Giddings.