2.00pm: Spinning Waveforms from Scattering Amplitudes in Modified Gravity

The detection of gravitational waves by the LIGO-VIRGO collaboration has marked a transformative era in astronomy, providing groundbreaking insights into the cosmos and creating new pathways for exploration. At the same time, advancements in the classical limit of scattering amplitudes, particularly through the KMOC formalism, have enriched our understanding of compact binary systems.

In this talk, we will discuss specific models of modified gravity that hold both theoretical and phenomenological interest, as for example the Einstein-dilaton-Gauss-Bonnet and Dynamical Chern-Simons theories. We will review how compact objects acquire scalar hair within these frameworks and demonstrate how scalar hair can be described on-shell for arbitrary spinning bodies. We compute waveforms directly from scattering amplitudes and investigate the interplay between modified gravity theories and radiation losses in spinning binary systems. By examining deviations from Einstein's theory, we aim to reveal the signatures of alternative gravity theories, providing insights into fundamental physics and new avenues for experimental testing.