Topic: From Quantum to Classical Scattering of Kerr Black Holes
Speaker: Dr. Lucile Cangemi, University of Edinburgh (UoE)
Date and time: July 22, 14:00–15:00
Venue: Room 103, #5 Building of SPST
Host: Alexander Ochirov
Abstract:
The dynamics of black-hole systems, relevant for gravitational-wave physics, admit an effective description as point particles in a putative QFT coupled to gravity. Elegant three-point spin-s amplitudes first proposed by Arkani-Hamed, Huang and Huang were later shown to encode the cubic interactions in the Kerr EFT. However constructing the corresponding four-point Compton amplitudes is an open problem. In this talk, I will discuss the origin of the Kerr three-point amplitudes from a higher-spin theory perspective. Guided by higher-spin constraints and classical-limit analysis, I will propose quantum and classical tree-level Compton amplitudes to all orders in spin.
Biography:
Dr. Lucile Cangemi is a postdoctoral researcher currently transitioning to the School of Mathematics, University of Edinburgh, where she was awarded the four-year Flora Philip Fellowship. In late spring of 2024, she received her doctoral degree from Uppsala University in Sweden under the supervision of Prof. Henrik Johansson. Her research focuses on higher-spin scattering amplitudes, specializing in the application to gravitational wave physics relevant to rotating Kerr black holes.