activity
20202025
most citedClassical Solutions and their Double Copy in Split Signature

76 citations · 94 across the 10 of their papers we have counts for

collaborators

10 papers

hep-th2025

Hawking Radiation meets the Double Copy

Rafael Aoude, Donal O'Connell, Matteo Sergola +1

We describe an electromagnetic system which is related to black hole production with Hawking radiation through the double copy. We consider the scattering of a massless scalar part…

hep-th2025★ 4 cited

Quantum Effects for Black Holes with On-Shell Amplitudes

Katsuki Aoki, Andrea Cristofoli, Hyun Jeong +2

We develop a framework based on modern amplitude techniques to analyze emission and absorption effects in black hole physics, including Hawking radiation. We first discuss quantum…

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★ 1 cited

Inelastic Coupled-Channel Eikonal Scattering

Rafael Aoude, Andrea Cristofoli, Asaad Elkhidir +1

Emitted radiation and absorption effects in black hole dynamics lead to inelastic scattering amplitudes. In this paper, we study how these effects introduce an inelasticity functio…

gr-qc2024★ 1 cited

Post-Newtonian observables for aligned-spin binaries to sixth order in spin from gravitational self-force and Compton amplitudes

Yilber Fabian Bautista, Mohammed Khalil, Matteo Sergola +2

Accurate modeling of compact binaries is essential for gravitational-wave detection and parameter estimation, with spin being an important effect to include in waveform models. In…

hep-th2023★ 3 cited

Radiation and Reaction at One Loop

Asaad Elkhidir, Donal O'Connell, Matteo Sergola +1

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 objec…

hep-th2022

NLO deflections for spinning particles and Kerr black holes

Gabriel Menezes, Matteo Sergola

We employ the "KMOC" formalism of [1] to compute classical momentum deflections of spinning bodies with arbitrary spin orientations up to next-to-leading order (one loop). We do th…

hep-th2021

NS-NS Spacetimes from Amplitudes

Ricardo Monteiro, Silvia Nagy, Donal O'Connell +2

Recent work has shown how on-shell three-point amplitudes in gauge theory and gravity, representing the coupling to massive particles, correspond in the classical limit to the curv…

hep-th2021★ 9 cited

The Uncertainty Principle and Classical Amplitudes

Andrea Cristofoli, Riccardo Gonzo, Nathan Moynihan +4

We study the variance in the measurement of observables during scattering events, as computed using amplitudes. The classical regime, characterised by negligible uncertainty, emerg…

hep-th2020★ 76 cited

Classical Solutions and their Double Copy in Split Signature

Ricardo Monteiro, Donal O'Connell, David Peinador Veiga +1

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 amplitudes…