Starting from the leading soft term of the 5-point amplitude, involving a graviton and two Kerr
black holes, that factorises into the product of the elastic amplitude without the graviton and …

A bstract We employ the “KMOC” formalism of [1] to compute classical momentum
deflections of spinning bodies with arbitrary spin orientations up to next-to-leading order …

A bstract Many gauge theories possess a hidden duality between color and kinematics in
their on-shell scattering amplitudes. An open problem is to formulate an off-shell realization …

A bstract In the standard derivation of the Kerr-Schild double copy, the geodicity of the Kerr-
Schild vector and the stationarity of the spacetime are presented as assumptions that are …

We give an explicit gauge invariant, off-shell, and local double copy construction of gravity
from Yang-Mills theory to quartic order. To this end we use the framework of homotopy …

Waveforms are classical observables associated with any radiative physical process. Using
scattering amplitudes, these are usually computed in a weak-field regime to some finite …

A bstract We construct two-dimensional quantum states associated to four-dimensional
linearized rotating self-dual black holes in (2, 2) signature Klein space. The states are …

A bstract Electric-magnetic duality, the Newman-Janis shift, and the double copy all act by
elementary operations on three-point amplitudes. At the same time, they generate a network …

A bstract The double copy relates momentum-space scattering amplitudes in gauge and
gravity theories. It has also been extended to classical solutions, where in some cases an …

Field theories with kinematic Lie algebras, such as field theories featuring color–kinematics
duality, possess an underlying algebraic structure known as BV■‐algebra. If, additionally …