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hep-th2026
Higher-spin self-dual gravity from holomorphic planes in twistor space
Nicolas Boulanger, Yannick Herfray, Lionel Mason +1
We prove a `nonlinear graviton theorem' for higher-spin self-dual gravity. We consider small deformations of the complex structure of the non-projective twistor space that are boun…
hep-th2026
Infrared physics of QED and gravity from representation theory
Laura Donnay, Yannick Herfray
The infrared structure of QED and gravity is known to be governed by an infinite-dimensional symmetry group which extends the Poincaré group to include, respectively, large …
hep-th2026
A geometrical invitation to BMS group theory
Xavier Bekaert, Yannick Herfray, Lea Mele +1
In these lecture notes, a group-theoretical introduction to BMS symmetries is provided in a self-contained manner. More precisely, all definitions and structures are purely based o…