193 citations · 2k across the 63 of their papers we have counts for
65 papers
From AdS correlators to Carrollian amplitudes with the scattering equation
Tim Adamo, Iustin Surubaru, Bin Zhu
The scattering equations relate massless scattering kinematics to marked points on a Riemann sphere, and underpin remarkable formulae for the full tree-level S-matrices of many int…
Graviton scattering on self-dual black holes
Tim Adamo, Giuseppe Bogna, Lionel Mason +1
The computation of gravitational wave scattering on black hole spacetimes is an extremely hard problem, typically requiring approximation schemes that either treat the black hole p…
Twistorial chiral algebras in higher dimensions
Tim Adamo, Iustin Surubaru
In four spacetime dimensions, the classically integrable self-dual sectors of gauge theory and gravity have associated chiral algebras, which emerge naturally from their descriptio…
The KLT kernel in twistor space
Tim Adamo, Sonja Klisch
The double copy relationship between Yang-Mills theory and general relativity can be stated in terms of a field theory Kawai-Lewellen-Tye (KLT) momentum kernel, which maps two colo…
Eikonal amplitudes on the celestial sphere
Tim Adamo, Wei Bu, Piotr Tourkine +1
Celestial scattering amplitudes for massless particles are Mellin transforms of momentum-space scattering amplitudes with respect to the energies of the external particles, and beh…
Gluon scattering on the self-dual dyon
Tim Adamo, Giuseppe Bogna, Lionel Mason +1
The computation of scattering amplitudes in the presence of non-trivial background gauge fields is an important but extremely difficult problem in quantum field theory. In even the…
Gravitational Bound Waveforms from Amplitudes
Tim Adamo, Riccardo Gonzo, Anton Ilderton
With the aim of computing bound waveforms from scattering amplitudes, we explore gravitational two-body dynamics using the Schwinger-Dyson equations and Bethe-Salpeter recursion. W…
Scattering on self-dual Taub-NUT
Tim Adamo, Giuseppe Bogna, Lionel Mason +1
We derive exact solutions of massless free field equations and tree-level two-point amplitudes up to spin 2 on self-dual Taub-NUT space-time, as well as on its single copy, the sel…
Infrared structures of scattering on self-dual radiative backgrounds
Tim Adamo, Wei Bu, Bin Zhu
The scattering of gluons and gravitons in trivial backgrounds is endowed with many surprising infrared features which have interesting conformal interpretations on the two-dimensio…
Scattering amplitudes for self-force
Tim Adamo, Andrea Cristofoli, Anton Ilderton +1
The self-force expansion allows the study of deviations from geodesic motion due to the emission of radiation and its consequent back-reaction. We investigate this scheme within th…
Bethe-Salpeter equation for classical gravitational bound states
Tim Adamo, Riccardo Gonzo
The Bethe-Salpeter equation is a non-perturbative, relativistic and covariant description of two-body bound states. We derive the classical Bethe-Salpeter equation for two massive…
All-order celestial OPE in the MHV sector
Tim Adamo, Wei Bu, Eduardo Casali +1
On-shell kinematics for gluon scattering can be parametrized with points on the celestial sphere; in the limit where these points collide, it is known that tree-level gluon scatter…
Higher-spin Yang-Mills, amplitudes and self-duality
Tim Adamo, Tung Tran
The existence of interacting higher-spin theories is tightly constrained by many no-go theorems. In this paper, we construct a chiral, higher-spin generalization of Yang-Mills theo…
All order gravitational waveforms from scattering amplitudes
Tim Adamo, Andrea Cristofoli, Anton Ilderton +1
Waveforms are classical observables associated with any radiative physical process. Using scattering amplitudes, these are usually computed in a weak-field regime to some finite or…
The ultrarelativistic limit of Kerr
Tim Adamo, Andrea Cristofoli, Piotr Tourkine
The massless (or ultrarelativistic) limit of a Schwarzschild black hole with fixed energy was determined long ago in the form of the Aichelburg-Sexl shockwave, but the status of th…
Snowmass White Paper: the Double Copy and its Applications
Tim Adamo, John Joseph M. Carrasco, Mariana Carrillo-González +6
The double copy is, in essence, a map between scattering amplitudes in a broad variety of familiar field and string theories. In addition to the mathematically rich intrinsic struc…
Classical physics from amplitudes on curved backgrounds
Tim Adamo, Andrea Cristofoli, Anton Ilderton
We generalise the Kosower-Maybee-O'Connell (KMOC) formalism relating classical observables and scattering amplitudes to curved backgrounds. We show how to compute the final semicla…
Graviton scattering in self-dual radiative space-times
Tim Adamo, Lionel Mason, Atul Sharma
The construction of amplitudes on curved space-times is a major challenge, particularly when the background has non-constant curvature. We give formulae for all tree-level graviton…
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…