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hep-th2026
Logarithmic supertranslations as asymptotic symmetries of gravity at null infinity
Oscar Fuentealba, Marc Henneaux, Sébastien Robert +1
Logarithmic supertranslations have been shown recently to be symmetries of the gravitational field at spatial infinity. We extend this work by proving explicitly that they are also…
hep-th2026
A proof of conservation laws in gravitational scattering: tails and breaking of peeling
Geoffrey Compère, Sébastien Robert
We propose a definition of asymptotically flat spacetimes that is consistent with both null infinities and compatible with known properties of gravitational scattering, incoming an…
hep-th2025
Scalar, vector and tensor fields on with arbitrary sources: harmonic analysis and antipodal maps
Geoffrey Compère, Sébastien Robert
The scalar, vector and tensor spherical harmonics on three-dimensional de Sitter spacetime are defined and analyzed. Each harmonic defines two sets of asymptotic data on the two sp…