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gr-qc2021★ 5 cited
Lie Theory for Asymptotic Symmetries in General Relativity: The NU Group
David Prinz, Alexander Schmeding
We study the Newman--Unti (NU) group from the viewpoint of infinite-dimensional geometry. The NU group is a topological group in a natural coarse topology, but it does not become a…
gr-qc2021★ 12 cited
Lie Theory for Asymptotic Symmetries in General Relativity: The BMS Group
David Prinz, Alexander Schmeding
We study the Lie group structure of asymptotic symmetry groups in General Relativity from the viewpoint of infinite-dimensional geometry. To this end, we review the geometric defin…