The Yangian origin of the Grassmannian integral

J. M. Drummond, L. Ferro

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In this paper we analyse formulas which reproduce different contributions to scattering amplitudes in N=4 super Yang-Mills theory through a Grassmannian integral. Recently their Yangian invariance has been proved directly by using the explicit expression of the Yangian level-one generators. The specific cyclic structure of the form integrated over the Grassmannian enters in a crucial way in demonstrating the symmetry. Here we show that the Yangian symmetry fixes this structure uniquely.
Original languageEnglish
JournalJournal of High Energy Physics (JHEP)
Publication statusPublished - 25 Feb 2010


  • hep-th


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