4 citations · 5 across the 7 of their papers we have counts for
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An Effective -Matrix Approach to Low-Frequency Waveforms from Black Hole Mergers
Katsuki Aoki, Feng-Yin Cheng, Andrea Cristofoli +2
We develop an on-shell description of low-frequency gravitational waveforms from black-hole mergers beyond leading order. Treating the strongly coupled merger as effective hard …
Black Hole Thermodynamics Meets On-Shell Amplitudes: Local Detailed Balance and Thermal Spectrum from Spin Universality and Unitarity
Dogan Akpinar, Katsuki Aoki, Andrea Cristofoli +2
We develop an on-shell framework for thermal dissipation and radiation by macroscopic objects, whose large degeneracy of internal states is encoded in their entropy. In this framew…
Resumming Scattering Amplitudes for Waveforms
Katsuki Aoki, Andrea Cristofoli
We develop a formalism to compute non-perturbative 5-point scattering amplitudes and apply it to gravitational waveforms in the two-body problem for arbitrary trajectories. Drawing…
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…
Memory and supertranslations on plane wave spacetimes: an on-shell perspective
Andrea Cristofoli, Sonja Klisch
We revisit the computation of the classical gravitational waveform for a particle moving in a plane wave background using on-shell amplitudes. We emphasize the relationship between…
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…
On-Shell Approach to Black Hole Mergers
Katsuki Aoki, Andrea Cristofoli, Yu-tin Huang
We develop an on-shell approach to study black hole mergers. Since, asymptotically, the initial and final states can be described by point-like spinning particles, we propose a mas…