506 citations · 1.1k across the 47 of their papers we have counts for
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Cosmological Polytopes and the Wavefunction of the Universe
Nima Arkani-Hamed, Paolo Benincasa, Alexander Postnikov
We present a connection between the physics of cosmological time evolution and the mathematics of positive geometries, roughly analogous to similar connections seen in the context…
On-Shell Structures of MHV Amplitudes Beyond the Planar Limit
Nima Arkani-Hamed, Jacob L. Bourjaily, Freddy Cachazo +2
We initiate an exploration of on-shell functions in SYM beyond the planar limit by providing compact, combinatorial expressions for all leading singularities of MHV…
Scattering Amplitudes and the Positive Grassmannian
Nima Arkani-Hamed, Jacob L. Bourjaily, Freddy Cachazo +3
We establish a direct connection between scattering amplitudes in planar four-dimensional theories and a remarkable mathematical structure known as the positive Grassmannian. The c…
PP-wave string interactions from perturbative Yang-Mills theory
Neil R. Constable, Daniel Z. Freedman, Matthew Headrick +4
Recently, Berenstein et al. have proposed a duality between a sector of N=4 super-Yang-Mills theory with large R-charge J, and string theory in a pp-wave background. In the limit c…