November 20, 2023
CNES Paris Les Halles
Europe/Paris timezone

Spacetime-Symmetry Breaking and the Generation of Gravitational Waves

Nov 20, 2023, 3:40 PM
20m
Salle de l'Espace (CNES Paris Les Halles)

Salle de l'Espace

CNES Paris Les Halles

2 Pl. Maurice Quentin, 75001 Paris

Speaker

Nils Nilsson (SYRTE, Observatoire de Paris)

Description

Recently, the search for departures from the symmetries of General Relativity has received significant attention in the literature. In this talk, I outline the techniques for probing the nature of spacetime symmetries using the generation stage of gravitational waves. By using a generic effective-field theory, I show our solution scheme of the modified Einstein equations and I write down the the first Post-Newtonian corrections, which includes contributions from the spacetime-symmetry breaking terms. Focusing on the gravitational two-body problem, I write down a simple toy solution, and it becomes clear that in contrast to General Relativity, the monopolar and dipolar contributions are non-vanishing. We comment on the detectability of such signals by the LISA space mission, which has high signal-to-noise galactic binaries well inside its predicted sensitivity band.

Primary author

Christophe Le Poncin-Lafitte (SYRTE, Observatoire de Paris)

Co-author

Nils Nilsson (SYRTE, Observatoire de Paris)

Presentation materials