A numerical study of gluon scattering amplitudes in = 4 super Yang-Mills theory at strong coupling

Suguru Dobashi, Katsushi Ito, Koh Iwasaki

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9 Citations (Scopus)

Abstract

We study gluon scattering amplitudes in = 4 super Yang-Mills theory at strong coupling via the AdS/CFT correspondence. We solve numerically the discretized Euler-Lagrange equations on the square worldsheet for the minimal surface with light-like boundaries in AdS spacetime. We evaluate the area of the surface for the 4, 6 and 8-point amplitudes using worldsheet and radial cut-off regularizations. Their infrared singularities in the cut-off regularization are found to agree with the analytical results near the cusp less than 5% at 520 × 520 lattice points.

Original languageEnglish
Article number088
JournalJournal of High Energy Physics
Volume2008
Issue number7
DOIs
Publication statusPublished - 2008 Jul 1

Keywords

  • AdS-CFT correspondence
  • Extended supersymmetry
  • Gauge-gravity correspondence

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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