10 citations · 11 across the 4 of their papers we have counts for
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Spatially local energy density of gravitational waves
Antoine Rignon-Bret, Simone Speziale
We propose a new set of BMS charges at null infinity, characterized by a super-translation flux that contains only the `hard' term. This is achieved with a specific corner improvem…
Center-less BMS charge algebra
Antoine Rignon-Bret, Simone Speziale
We show that when the Wald-Zoupas prescription is implemented, the resulting charges realize the BMS symmetry algebra without any 2-cocycle nor central extension, at any cut of fut…
General covariance and boundary symmetry algebras
Antoine Rignon-Bret, Simone Speziale
In general relativity as well as gauge theories, non-trivial symmetries can appear at boundaries. In the presence of radiation some of the symmetries are not Hamiltonian vector fie…
Lessons from discrete light-cone quantization for physics at null infinity: Bosons in two dimensions
Glenn Barnich, Sucheta Majumdar, Simone Speziale +1
Motivated by issues in the context of asymptotically flat spacetimes at null infinity, we discuss in the simplest example of a massless scalar field in two dimensions several subtl…