565 citations · 2.7k across the 24 of their papers we have counts for
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Scattering Forms and the Positive Geometry of Kinematics, Color and the Worldsheet
Nima Arkani-Hamed, Yuntao Bai, Song He +1
The search for a theory of the S-Matrix has revealed surprising geometric structures underlying amplitudes ranging from the worldsheet to the amplituhedron, but these are all geome…
Positive Geometries and Canonical Forms
Nima Arkani-Hamed, Yuntao Bai, Thomas Lam
Recent years have seen a surprising connection between the physics of scattering amplitudes and a class of mathematical objects--the positive Grassmannian, positive loop Grassmanni…
The Amplituhedron and the One-loop Grassmannian Measure
Yuntao Bai, Song He, Thomas Lam
All-loop planar scattering amplitudes in maximally supersymmetric Yang-Mills theory can be formulated geometrically in terms of the "amplituhedron". We study the mathematical struc…
The Amplituhedron from Momentum Twistor Diagrams
Yuntao Bai, Song He
We propose a new diagrammatic formulation of the all-loop scattering amplitudes/Wilson loops in planar N=4 SYM, dubbed the "momentum-twistor diagrams". These are on-shell-diagrams…