146 citations · 631 across the 23 of their papers we have counts for
5 papers · 1 filter
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…
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…
Ambidextrous light transforms for celestial amplitudes
Atul Sharma
Low multiplicity celestial amplitudes of gluons and gravitons tend to be distributional in the celestial coordinates . We provide a new systematic remedy to this situatio…
Twistor action for general relativity
Atul Sharma
We reformulate Euclidean general relativity without cosmological constant as an action governing the complex structure of twistor space. Extending Penrose's non-linear graviton con…
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…