Infrared Limit of Gluon Amplitudes at Strong Coupling

TL;DR

This paper demonstrates that the infrared behavior of gluon scattering amplitudes at strong coupling can be understood through local cusp analysis, aligning with field theory and matching recent four-gluon amplitude calculations.

Contribution

It introduces a local cusp-based approach to extract the infrared structure of gluon amplitudes at strong coupling, confirming previous results.

Findings

Infrared divergences are captured by local cusp analysis.

Method aligns with field theory predictions.

Reproduces known four-gluon amplitude divergences.

Abstract

In this note, we propose that the infrared structure of gluon amplitudes at strong coupling can be fully extracted from a local consideration near cusps. This is consistent with field theory and correctly reproduces the infrared divergences of the four-gluon amplitude at strong coupling calculated recently by Alday and Maldacena.