303 citations · 1.7k across the 28 of their papers we have counts for
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Infrared and transcendental structure of two-loop supersymmetric QCD amplitudes
Gregor Kälin, Gustav Mogull, Alexander Ochirov +1
Using a careful choice of infrared (IR) subtraction scheme, we demonstrate the cancellation of all terms with transcendental weights 0,1,2 from the finite part of the full-color tw…
Multi-Quark Colour Decompositions from Unitarity
Alexander Ochirov, Ben Page
Any loop QCD amplitude at full colour is constructed from kinematic and gauge-group building blocks. In a unitarity-based on-shell framework, both objects can be reconstructed from…
Double copy for massive quantum particles with spin
Henrik Johansson, Alexander Ochirov
The duality between color and kinematics was originally observed for purely adjoint massless gauge theories, and later found to hold even after introducing massive fermionic and sc…
Black-hole scattering with general spin directions from minimal-coupling amplitudes
Alfredo Guevara, Alexander Ochirov, Justin Vines
We study the link between classical scattering of spinning black holes and quantum amplitudes for massive spin- particles. Generic spin orientations of the black holes are consi…