Gravitational Observables from Scattering Amplitudes


O'Connell, D. (2023). Gravitational Observables from Scattering Amplitudes. Perimeter Institute. https://pirsa.org/23050037


O'Connell, Donal. Gravitational Observables from Scattering Amplitudes. Perimeter Institute, May. 02, 2023, https://pirsa.org/23050037


          @misc{ pirsa_PIRSA:23050037,
            doi = {10.48660/23050037},
            url = {https://pirsa.org/23050037},
            author = {O{\textquoteright}Connell, Donal},
            keywords = {Quantum Fields and Strings},
            language = {en},
            title = {Gravitational Observables from Scattering Amplitudes},
            publisher = {Perimeter Institute},
            year = {2023},
            month = {may},
            note = {PIRSA:23050037 see, \url{https://pirsa.org}}

Donal O'Connell University of Edinburgh


Gravity is exciting from both theoretical and observational perspectives. In this talk, I will discuss how gravitational observables, such as waveforms, can be determined from scattering amplitudes in quantum field theory. We can therefore use the full arsenal of theoretical collider physics to compute gravitational waveforms. As an example, I will describe the waveform generated in a scattering process at next-to-leading order. I will finish by discussing how amplitudes can further be used to understand non-radiative aspects of gravity, including the curvature of the Kerr metric itself. This leads to a network of “double copy” relations between classical solutions of the Maxwell and Einstein equations.

Zoom link:  https://pitp.zoom.us/j/92038383246?pwd=RjQwVHo1VWR6VDl0a3VPZEU0ZXFyUT09