Testing gravity with the two-body problem (remote talk)

par Adrien Kuntz (Scuola Normala di Pisa)

mardi 30 mars 2021, 11:00 → 12:00 Europe/Paris

Gravitational waves provide a new probe into the strong-field regime of gravity. It is thus essential to identify the predictions of General Relativity on the nature of the two-body problem, and to contrast them to alternative theories. In this talk, I will review how Effective Field Theory formalisms allow to place model-independent constraints on gravitational theories. I will first introduce some of the tools used in the General Relativistic two-body problem, then show how one can adapt them to Scalar-Tensor theories. Finally, I will comment on black holes properties in Scalar-Tensor theories (the so-called "no-hair theorem") and introduce a new Effective Field Theory designed to test these properties with gravitational waveforms.