Amplituhedron cells and Stanley symmetric functions
classification
🧮 math.AG
hep-thmath.CO
keywords
amplituhedronstanleysymmetricaffineamplitudescellsclasscohomology
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The amplituhedron was recently introduced in the study of scattering amplitudes in $N=4$ super Yang-Mills. We compute the cohomology class of a tree amplituhedron subvariety of the Grassmannian to be the truncation of an affine Stanley symmetric function.
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