652 citations · 2.7k across the 30 of their papers we have counts for
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Hamiltonian structure and asymptotic symmetries of the Einstein-Maxwell system at spatial infinity
Marc Henneaux, Cédric Troessaert
We present a new set of asymptotic conditions for gravity at spatial infinity that includes gravitational magnetic-type solutions, allows for a non-trivial Hamiltonian action of th…
BMS Group at Spatial Infinity: the Hamiltonian (ADM) approach
Marc Henneaux, Cédric Troessaert
New boundary conditions for asymptotically flat spacetimes are given at spatial infinity. These boundary conditions are invariant under the BMS group, which acts non trivially. The…
Finite BMS transformations
Glenn Barnich, Cédric Troessaert
The action of finite BMS and Weyl transformations on the gravitational data at null infinity is worked out in three and four dimensions in the case of an arbitrary conformal factor…
Poisson Structure of the Boundary Gravitons in 3D Gravity with Negative
Cedric Troessaert
We use the hamiltonian formalism to study the asymptotic structure of 3 dimensional gravity with a negative cosmological constant. We start by defining very general fall-off condit…
Supertranslations call for superrotations
Glenn Barnich, Cédric Troessaert
We review recent results on symmetries of asymptotically flat spacetimes at null infinity. In higher dimensions, the symmetry algebra realizes the Poincaré algebra. In three and fo…
Symmetries of asymptotically flat 4 dimensional spacetimes at null infinity revisited
Glenn Barnich, Cedric Troessaert
It is argued that the symmetry algebra of asymptotically flat spacetimes at null infinity in 4 dimensions should be taken as the semi-direct sum of supertranslations with infinites…