Waveforms from amplitudes - Archive ouverte HAL
Article Dans Une Revue Physical Review D Année : 2022

Waveforms from amplitudes

Andrea Cristofoli
  • Fonction : Auteur
Riccardo Gonzo
  • Fonction : Auteur
Donal O'Connell
  • Fonction : Auteur

Résumé

We show how to compute classical wave observables using quantum scattering amplitudes. We discuss observables both with incoming and with outgoing waves. The required classical limits are naturally described by coherent states of massless bosons. We recompute the classic gravitational deflection of light, and also show how to rederive Thomson scattering. We introduce a new class of local observables, which includes the asymptotic electromagnetic and gravitational Newman-Penrose scalars. As an example, we compute a simple radiated waveform: the expectation of the electromagnetic field in charged-particle scattering. At leading order, the waveform is trivially related to the five-point scattering amplitude.

Dates et versions

hal-03315388 , version 1 (05-08-2021)

Identifiants

Citer

Andrea Cristofoli, Riccardo Gonzo, David A. Kosower, Donal O'Connell. Waveforms from amplitudes. Physical Review D, 2022, 106 (5), pp.056007. ⟨10.1103/PhysRevD.106.056007⟩. ⟨hal-03315388⟩
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