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GR: Fachverband Gravitation und Relativitätstheorie

GR 5: Gravitational Waves

GR 5.2: Vortrag

Dienstag, 31. März 2020, 11:45–12:00, H-HS IX

Binary black hole dynamics from scattering — •Jan Steinhoff — Albert Einstein Institute, Potsdam

The ongoing detections of gravitational waves by LIGO and Virgo open a new era for astro- and fundamental physics. With improvements in detector sensitivity, more accurate predictions for gravitational waves are needed, which presents a challenge for numerical relativity and approximation methods. In this talk, recent developments in the area analytic approximations for compact binaries are discussed which are based on scattering processes. This ranges from classical computations of scattering angles for binary black holes to (quantum) probability amplitudes for the gravitational scattering of particles. In the latter regime, modern techniques such as on-shell methods and the Bern-Carrasco-Johansson double copy provide powerful tools to push analytic (approximate) predictions to higher accuracy.