Comparing one-loop gravitational bremsstrahlung amplitudes to the multipolar-post-Minkowskian waveform
Comparing one-loop gravitational bremsstrahlung amplitudes to the multipolar-post-Minkowskian waveform
We compare recent one-loop-level, scattering-amplitude-based, computations of the classical part of the gravitational bremsstrahlung waveform to the frequency-domain version of the corresponding multipolar-post-Minkowskian waveform result. When referring the one-loop result to the classical averaged momenta ${\overline{p}}_{a}=\frac{1}{2}({p}_{a}+{p}_{a}^{\ensuremath{'}})$, the two waveforms are found to agree at the Newtonian and first post-Newtonian levels, …