An S-matrix approach to gravitational-wave physics

The detection of gravitational waves emitted by binary systems has opened a new astronomical window into the Universe. We describe recent advances in the field of scattering amplitudes applied to the post-Minkowskian expansion, and the extraction of the effective two-body gravitational potential. The techniques presented here apply to any effective field theory of gravity and are not restricted to four-dimensional Einstein gravity.This article is part of the theme issue 'The future of mathematical cosmology, Volume 2'.

Automated summary

The detection of gravitational waves has provided new insights into the Universe, and recent advances in scattering amplitudes and the extraction of effective gravitational potential have contributed to this field. These techniques are not limited to four-dimensional Einstein gravity.