93 citations · 341 across the 15 of their papers we have counts for
16 papers
Loop-Level Double Copy Relations from Forward Limits
Qu Cao, Song He, Yong Zhang +1
We study double copy relations for loop integrands in gauge theories and gravity based on their constructions from single cuts, which are in turn obtained from forward limits of lo…
Generalized Color Orderings: CEGM Integrands and Decoupling Identities
Freddy Cachazo, Nick Early, Yong Zhang
In a recent paper, we defined generalized color orderings (GCO) and Feynman diagrams (GFD) to compute color-dressed generalized biadjoint amplitudes. In this work, we study the Cac…
Color-Dressed Generalized Biadjoint Scalar Amplitudes: Local Planarity
Freddy Cachazo, Nick Early, Yong Zhang
The biadjoint scalar theory has cubic interactions and fields transforming in the biadjoint representation of . Amplitudes are "colo…
Perfecting one-loop BCJ numerators in SYM and supergravity
Alex Edison, Song He, Henrik Johansson +3
We take a major step towards computing -dimensional one-loop amplitudes in general gauge theories, compatible with the principles of unitarity and the color-kinematics duality.…
One-loop diagrams with quadratic propagators from the worldsheet
Bo Feng, Song He, Yong Zhang +1
It is well known that forward limits of tree-level amplitudes (and those trivalent diagrams they consist of) produce one-loop amplitudes and trivalent diagrams with propagators lin…
Notes on Worldsheet-Like Variables for Cluster Configuration Spaces
Song He, Yihong Wang, Yong Zhang +1
We continue the exploration of various appearances of cluster algebras in scattering amplitudes and related topics in physics. The cluster configuration spaces generalize the famil…