Την Τετάρτη 29 Ιανουάριου στις 12:00 ο Pierre Vanhove (Université Paris-Saclay) θα δώσει ένα διαδικτυακό σεμινάριο.

Η μετάδοση θα γίνει μέσω Zoom:
https://authgr.zoom.us/j/96954836330?pwd=B15w363TyIH7czUdL2jdB6LGMNo6Ze.1

Meeting ID: 969 5483 6330
Passcode: 484254

Ακολουθούν ο τίτλος και η περίληψη της ομιλίας:

Title: From scattering amplitudes to gravitational waves observables

Abstract: The necessity for high precision analytic computations of gravitational waves emitted from the gravitational two-body scattering in Einstein gravity has driven the development of scattering amplitudes techniques for classical gravitational observables. This approach has yielded analytic results that are in impressive agreement with those obtained from numerical general relativity.
In this presentation, we will elucidate the noteworthy correlation between the perturbative quantum scattering methodology and the classical post-Minkowskian expansion. This framework offers a coherent framework for comprehending gravitational radiation. Additionally, it provides a natural embedding of Einstein gravity into an effective field theory framework.
We will present a novel cubic formulation of gravity and demonstrate how this facilitates the computation of gravitational observables to all orders in perturbation.