246 citations · 620 across the 25 of their papers we have counts for
14 papers · 1 filter
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…
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 …
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…
BMS representations for generic supermomentum
Xavier Bekaert, Yannick Herfray
We revisit the classification, and give explicit realisations, of unitary irreducible representations of the BMS group. As compared to McCarthy's seminal work, we make use of a uni…
Carrollian representation from twistor space
Laura Donnay, Laurent Freidel, Yannick Herfray
We construct an explicit realization of the action of the loop algebra on fields at null infinity. This action is directly derived by Penrose transform of the geome…
Conformal boundaries of Minkowski superspace and their super cuts
Nicolas Boulanger, Yannick Herfray, Noémie Parrini
In this article we carry out a detailed investigation of the geometric nature of the points at infinity of Minkowski superspace. It turns out that there are several sets of points…