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hep-th2024
Amplitudes for Hawking Radiation
Rafael Aoude, Donal O'Connell, Matteo Sergola
We obtain the Hawking spectrum by exponentiating a series of Feynman diagrams describing a scalar field scattering through a collapse background. Our approach is rooted in semiclas…
hep-th2024
Supertranslations from Scattering Amplitudes
Asaad Elkhidir, Donal O'Connell, Radu Roiban
On-shell methods have found a new application to local observables such as asymptotic radiation fields and gravitational waveforms. While these observables are invariant under smal…