Motivated by conceptual problems in quantum theories of gravity, the gravitational eikonal
approach, inspired by its electromagnetic predecessor, has been successfully applied to the …

Using the spinning worldline quantum field theory formalism we calculate the quadratic-in-
spin momentum impulse Δ pi μ and spin kick Δ ai μ from a scattering of two arbitrarily …

A bstract We exhibit an initial-value formulation of the worldline quantum field theory (WQFT)
approach to the classical two-body problem in general relativity. We show that the …

We review recent progress and future prospects for harnessing powerful tools from
theoretical high-energy physics, such as scattering amplitudes and effective field theory, to …

Making use of the recently derived, all-spin, opposite-helicity Compton amplitude, we
calculate the classical gravitational scattering amplitude for one spinning and one spinless …

A bstract The classical scattering of spinning objects is well described by the spinor-helicity
formalism for heavy particles. Using these variables, we derive spurious-pole-free, all-spin …

Scattering amplitudes have their origin in quantum field theory, but have wide-ranging
applications extending to classical physics. We review a formalism to connect certain …

Using the spinning, supersymmetric worldline quantum field theory formalism we compute
the momentum impulse and spin kick from a scattering of two spinning black holes or …

We propose that the dynamics of Kerr black holes is strongly constrained by the principle of
gauge symmetry. We initiate the construction of effective field theories for Kerr black holes of …

Starting with on-shell amplitudes compatible with the scattering of Kerr black holes up to
Compton-amplitude contact terms, we produce the gravitational waveform and memory …