635 citations · 2.8k across the 29 of their papers we have counts for
Showing 2015Show all
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hep-th2015★ 89 cited
One-loop Scattering Equations and Amplitudes from Forward Limit
Song He, Ellis Ye Yuan
We show that the forward limit of tree-level scattering equations with two massive particles yields the SL(2,C)-covariant form of the one-loop scattering equations recently propose…
hep-th2015★ 81 cited
New Double Soft Emission Theorems
Freddy Cachazo, Song He, Ellis Ye Yuan
We study the behavior of the tree-level S-matrix of a variety of theories as two particles become soft. By analogy with the recently found subleading soft theorems for gravitons an…
hep-th2015★ 401 cited
Scattering Equations and Matrices: From Einstein To Yang-Mills, DBI and NLSM
Freddy Cachazo, Song He, Ellis Ye Yuan
The tree-level S-matrix of Einstein's theory is known to have a representation as an integral over the moduli space of punctured spheres localized to the solutions of the scatterin…