11.11.2021 (Thursday)

Amplitudes, Loops, and Gravity

Regular Seminar Mao Zeng (Edinburgh)

14:00 QMW
room zoom

[for zoom link please email s.nagy@qmul.ac.uk] Next-generation gravitational wave detectors demand highly precise predictions for waveforms. We present advances in binary inspiral dynamics by taking classical limits of scattering amplitudes in perturbative quantum gravity. The amplitudes are calculated efficiently using modern methods for scattering amplitudes and loop integration techniques developed for colliders. Classical physics can be extracted by several complementary approaches, including effective field theory, eikonal exponentiation, and extrapolation of quantum observables defined by the S-matrix. For both conservative and radiative dynamics, we obtain new terms in the post-Minksowskian expansion which represent first advances in decades.