193 citations · 2k across the 63 of their papers we have counts for
7 papers · 1 filter
Eikonal amplitudes from curved backgrounds
Tim Adamo, Andrea Cristofoli, Piotr Tourkine
Eikonal exponentiation in QFT describes the emergence of classical physics at long distances in terms of a non-trivial resummation of infinitely many diagrams. Long ago, 't Hooft p…
Celestial operator products from the worldsheet
Tim Adamo, Wei Bu, Eduardo Casali +1
We compute the operator product expansions of gluons and gravitons in celestial CFT from the worldsheet OPE of vertex operators of four-dimensional ambitwistor string theories. Rem…
Particle-beam scattering from strong-field QED
Tim Adamo, Anton Ilderton, Alexander J. MacLeod
We consider the scattering of probe particles on an ultra-boosted beam of charge, in the case that the fields of the beam are strong and must be treated non-perturbatively. We show…
Celestial Symmetries from Twistor Space
Tim Adamo, Lionel Mason, Atul Sharma
We explain how twistor theory represents the self-dual sector of four dimensional gravity in terms of the loop group of Poisson diffeomorphisms of the plane via Penrose's non-linea…
Classical double copy at null infinity
Tim Adamo, Uri Kol
We give two double copy prescriptions which construct asymptotically flat solutions in gravity from asymptotically flat gauge fields. The first prescription applies to radiative fi…
Twistor sigma models for quaternionic geometry and graviton scattering
Tim Adamo, Lionel Mason, Atul Sharma
We reformulate the twistor construction for hyper- and quaternion-Kähler manifolds, introducing new sigma models that compute scalar potentials for the geometry. These sigma models…
One-loop multicollinear limits from 2-point amplitudes on self-dual backgrounds
Tim Adamo, Anton Ilderton, Alexander J. MacLeod
For scattering amplitudes in strong background fields, it is -- at least in principle -- possible to perturbatively expand the background to obtain higher-point vacuum amplitudes.…