5 papers
Factorizations for tree amplitudes in the double-cover framework: from gravity to other theories
Kang Zhou
In this paper, we demonstrate that the factorizations for tree amplitudes in the double-cover framework, for various theories, can be generated from the gravity amplitude in the do…
Unified web for expansions of amplitudes
Kang Zhou
In this paper, we demonstrate that using differential operators one can construct the complete unified web for expansions of amplitudes for a wide range of theories. We first re-de…
Expansion of tree amplitudes for EM and other theories
Shi-Qian Hu, Kang Zhou
The expansions of tree-level amplitudes for one theory into amplitudes for another theory, which have been studied in various recent literatures, exhibit hidden connections between…
Expansion of Einstein-Yang-Mills theory by Differential Operators
Bo Feng, Xiaodi Li, Kang Zhou
The factorization form of the integrands in the Cachazo-He-Yuan (CHY) formalism makes the generalized Kawai-Lewellen-Tye (KLT) relations manifest, thus amplitudes of one theory can…
Note on differential operators, CHY integrands, and unifying relations for amplitudes
Kang Zhou, Bo Feng
An elegant unified web for amplitudes of various theories was given by Cachazo, He and Yuan in the CHY framework a few years ago. Recently, similar web has also been constructed by…