QCD Meets Gravity 2023

Session

Monday PM 1

11 Dec 2023, 14:00

4/3-006 - TH Conference Room (CERN)

Conveners

Monday PM 1: Gravitational Waves

• Stefano Foffa (Universite de Geneve (CH))

5. Numerical Simulations of Binary Black Hole Encounters

Harald Pfeiffer (AEI Potsdam)

11/12/2023, 14:00

Binary black holes are the most numerous source of observed
gravitational waves (GW). Precise knowledge about the interaction
between two black holes and the emitted GWs are of high importance for
finding and analysing GW signals, as well as to deepen the
understanding of the structure and solutions of Einstein's equations.
In this talk, I summarize the contributions of Numerical...

7. Effective Field Theory for Extreme Mass Ratios (Part 1)

Nabha Shah

11/12/2023, 14:30

The metric and corresponding geodesic equation describing test-particle dynamics in a background encode gravitational data to all orders in the post-Minkowskian (PM) expansion and effectively resum certain infinite classes of flat-space Feynman diagrams. In the context of the connection between the bound gravitational two-body problem and the relativistic scattering of massive particles...

6. Effective Field Theory for Extreme Mass Ratios (part 2)

Jordan Wilson-Gerow (Caltech)

11/12/2023, 15:00

The standard approximations to the two-body problem in General Relativity include weak-field perturbation theory (“PN’’ and “PM’’) and a strong-field scheme which expands in powers of the mass ratio but retains all orders in G-Newton, ie. “self-force’’. I’ll discuss recent work which used inspiration from self-force to simplify perturbative computations. We introduce an effective field theory...