The detection of gravitational waves by the LIGO-VIRGO collaboration has marked a transformative era in astronomy, providing unprecedented insights into the cosmos and opening new avenues for exploring the universe. At the same time, advances in the classical limit of scattering amplitudes, notably through the KMOC formalism, have opened up new avenues for understanding compact binary systems. In this talk, we delve into the significance of these advances and explore the emergence of waveforms derived from scattering amplitudes. Theoretical underpinnings are elucidated, offering insights into the dynamics of binary systems and valuable tools for characterizing gravitational wave emissions. Complementing waveforms derived from scattering amplitudes, we delve into the interplay of modified gravity theories with radiation losses in spinning binary systems, including computations in a QED toy model of modified gravity. We examine deviations from Einstein's theory on waveforms, shedding light on modified gravity's effects. Through theoretical analyses, we unveil how alternative gravity theories manifest, offering insights into fundamental physics and new testing avenues.
Local: Sala Jayme Tiomno
