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- W4293313368 abstract "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." @default.
- W4293313368 created "2022-08-27" @default.
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- W4293313368 date "2021-07-21" @default.
- W4293313368 modified "2023-10-16" @default.
- W4293313368 title "Waveforms from Amplitudes" @default.
- W4293313368 doi "https://doi.org/10.48550/arxiv.2107.10193" @default.
- W4293313368 hasPublicationYear "2021" @default.
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