Inverse Soft Factors and Grassmannian Residues

Abstract

The action of inverse soft factors on scattering amplitudes in N=4 SYM is shown to take a remarkably simple form in momentum twistor space. This is used to identify individual residues of the grassmannian with primitive leading singularities at NMHV and N^2MHV and to derive explicit expressions in terms of momentum twistors.

32 pages, 24 figures, Minor corrections

References in corpus (25)

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• The Yangian origin of the Grassmannian integral
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Cited by in corpus (15)

• Scattering Amplitudes and Wilson Loops in Twistor Space
• Yang-Baxter operators and scattering amplitudes in $\mathcal{N}=4$ super-Yang-Mills theory
• On-shell Diagrams, Graßmannians and Integrability for Form Factors
• Constructing Amplitudes from Their Soft Limits
• Generating All Tree Amplitudes in N=4 SYM by Inverse Soft Limit
• Efficient Tree-Amplitudes in N=4: Automatic BCFW Recursion in Mathematica
• On Soft Theorems And Form Factors In N=4 SYM Theory
• MHV Diagrams from an All-Line Recursion Relation
• Global Poles of the Two-Loop Six-Point N=4 SYM integrand
• Constructing Gravity Amplitudes from Real Soft and Collinear Factorisation
• On the Classification of Residues of the Grassmannian
• One-loop N = 4 super Yang-Mills scattering amplitudes in d dimensions, relation to open strings and polygonal Wilson loops
• Constructing EYM amplitudes by inverse soft limit
• Twistor and Polytope Interpretations for Subleading Color One-Loop Amplitudes
• Top-forms of Leading Singularities in Nonplanar Multi-loop Amplitudes