3 papers
hep-th2026
AdS Celestial Symmetries: from Ambitwistor charges to CFT Light-Ray Operators
Alex Goodenbour, Adam Kmec, Lionel Mason +1
The algebra is the cosmological-constant deformation of the celestial symmetry algebra of gravity, providing an infinite-dimensional extension o…
gr-qc2023
Twistors, charge structure, and BMS symmetries
Alex Goodenbour
Corresponding to the Bondi-Metzner-Sachs (BMS) symmetry algebra of asymptotically-flat spacetimes are a set of BMS charges. These are formally constructed via the symplectic formal…
gr-qc2023
The non-linear perturbation of a black hole by gravitational waves. III. Newman-Penrose constants
Jörg Frauendiener, Alex Goodenbour, Chris Stevens
In this paper we continue our study of the non-linear response of a Schwarzschild black hole to an ingoing gravitational wave by computing the Newman-Penrose (NP) constants. The NP…