Collinear limit of scattering amplitudes at strong coupling

Benjamin Basso, Amit Sever, Pedro Vieira

Research output: Contribution to journalArticlepeer-review

Abstract

In this Letter, we consider the collinear limit of gluon scattering amplitudes in planar N=4 super-Yang-Mills theory at strong coupling. We argue that in this limit scattering amplitudes map into correlators of twist fields in the two dimensional nonlinear O(6) sigma model, similar to those appearing in recent studies of entanglement entropy. We provide evidence for this assertion by combining the intuition springing from the string world-sheet picture and the predictions coming from the operator product expansion series. One of the main implications of these considerations is that scattering amplitudes receive equally important contributions at strong coupling from both the minimal string area and its fluctuations in the sphere.

Original languageEnglish
Article number261604
JournalPhysical Review Letters
Volume113
Issue number26
DOIs
StatePublished - 31 Dec 2014
Externally publishedYes

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