BMS group at spatial infinity: the Hamiltonian (ADM) approach
BMS group at spatial infinity: the Hamiltonian (ADM) approach
A bstract 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 boundary conditions fulfill all standard consistency requirements: (i) they make the symplectic form finite; (ii) they contain the Schwarzchild solution, the Kerr …