4 problems

BMS encoding conjecture. The information of $M$ is encoded in the BMS fields whose support is compatible with the supertranslations reconstructing $M$ in the null surface formalism…

Let $\operatorname{BMS}_3$ denote the three-dimensional Bondi–Metzner–Sachs algebra, which is the semidirect product of the Lorentz group with the diffeomorphism group of the circl…

Consider an asymptotically flat spacetime and a candidate boundary theory associated with its null boundary, such as $\Im^+$ or $\Im^-$. Since the Poincaré group is a subgroup of t…

The BMS groups at past and future null infinity can be matched antipodally near spatial infinity, producing a global diagonal asymptotic symmetry group for general relativity. Stro…