ITMP Seminar "Gravitational bound waveforms from amplitudes"

Title: Gravitational bound waveforms from amplitudes

Abstract: We will develop a formalism to study the gravitational waveform emitted during the inspiral phase of the dynamics of compact objects (black holes, neutron starts) using the effective field theory approach with a point particle description. First, we will consider the scattering setup for the two-body problem where a natural on-shell relation between waveforms and amplitudes can be established in the classical limit. We will then derive a new surprising on-shell map between scattering and bound waveforms, which is inspired and confirmed by Post-Newtonian calculations with the standard time-domain multipoles, and we will show that a resummation of the perturbative series is required to make contact with phenomenological waveform models.