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hep-th2020★ 3 cited
Note on scalar-graviton and scalar-photon-graviton amplitudes
Kang Zhou, Guo-Jun Zhou
In this short note, we propose an algorithm based on the expansions of amplitudes, the dimensional reduction technic and the differential operators, to calculate the tree level sca…
hep-th2020★ 4 cited
Transmuting off-shell CHY integrals in the double-cover framework
Kang Zhou, Guo-Jun Zhou
In this paper, by defining off-shell amplitudes as off-shell CHY integrals, and redefining the longitudinal operator, we demonstrate that the differential operators which link on-s…