3 papers
hep-th2023
Resummed spinning waveforms from five-point amplitudes
Andreas Brandhuber, Graham R. Brown, Gang Chen +2
We compute the classical tree-level five-point amplitude for the two-to-two scattering of spinning celestial objects with the emission of a graviton. Using this five-point amplitud…
hep-th2023
Self-Dual Fields on Self-Dual Backgrounds and the Double Copy
Graham R. Brown, Joshua Gowdy, Bill Spence
We explore the double copy for self-dual gauge and gravitational fields on self-dual background spacetimes. We consider backgrounds associated to solutions of the second Plebanski…
hep-th2021
Celestial Superamplitudes
Andreas Brandhuber, Graham R. Brown, Joshua Gowdy +2
We study celestial amplitudes in (super) Yang-Mills theory using a parameterisation of the spinor helicity variables where their overall phase is not fixed by the little group acti…