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hep-th2023
Symmetry group at future null infinity III: Gravitational theory
Wen-Bin Liu, Jiang Long
We reduce the gravitational theory in an asymptotically flat spacetime to future null infinity. We compute the Poincaré flux operators at future null infinity and construct the sup…
hep-th2023★ 18 cited
Symmetry group at future null infinity II: Vector theory
Wen-Bin Liu, Jiang Long
In this paper, we reduce the electromagnetic theory to future null infinity and obtain a vector theory at the boundary. We compute the Poincaré flux operators which could be genera…