A bstract We propose a new program for computing a certain integrand of scattering
amplitudes of four-dimensional gauge theories which we call the form factor integrand …

Scattering amplitudes and Wilson loops in twistor space - IOPscience Skip to content IOP
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A bstract We consider the twistor description of classical self-dual Einstein gravity in the
presence of a defect operator wrapping a certain ℂℙ 1. The backreaction of this defect …

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-linear …

A bstract Carrollian holography aims to express gravity in four-dimensional asymptotically
flat spacetime in terms of a dual three-dimensional Carrollian CFT living at null infinity …

A bstract The celestial Lw 1+∞ symmetries in asymptotically flat spacetimes have a natural
geometric interpretation on twistor space in terms of Poisson diffeomorphisms. Using this …

A bstract The question of whether the holomorphic collinear singularities of graviton
amplitudes define a consistent chiral algebra has garnered much recent attention. We …

We consider holomorphic Poisson-BF theory on twistor space. Classically, this describes
self-dual Einstein gravity on space-time, but at the quantum level it is plagued by an …

We apply an algebraic double copy construction of gravity from gauge theory to three-
dimensional (3D) Chern-Simons theory. The kinematic algebra K is the 3D de Rham …

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 …