The soft limits of scattering amplitudes have been extensively studied due to their essential
role in the computation of physical observables in collider physics. The universal …

A bstract A precise link is derived between scalar-graviton S-matrix elements and
expectation values of operators in a worldline quantum field theory (WQFT), both used to …

Using the recently established formalism of a worldline quantum field theory description of
the classical scattering of two spinless black holes, we compute the far-field time-domain …

The recently established formalism of a worldline quantum field theory, which describes the
classical scattering of massive bodies (black holes, neutron stars, or stars) in Einstein …

We compute the conservative two-body Hamiltonian of a compact binary system with a
spinning black hole through O (G 3) to all orders in velocity, including linear and quadratic …

A bstract We show that the Newman-Janis shift property of the exact Kerr solution can be
interpreted in terms of a worldsheet effective action. This holds both in gravity, and for the …

A bstract We study classical radiation fields at next-to-leading order using the methods of
scattering amplitudes. The fields of interest to us are sourced when two massive, point-like …

We compare recent one-loop-level, scattering-amplitude-based, computations of the
classical part of the gravitational bremsstrahlung waveform to the frequency-domain version …

If a set of massive objects collide in space and the fragments disperse, possibly forming
black holes, then this process will emit gravitational waves. Computing the detailed …

A bstract The three-point amplitude is the key building block in the on-shell approach to
scattering amplitudes. We show that the classical objects computed by massive three-point …