Abstract
With a view to understanding extended-BMS symmetries in the framework of the AdS4/CFT3 correspondence, asymptotically AdS geometries are constructed with null impulsive shockwaves involving a discontinuity in superrotation parameters. The holographic dual is proposed to be a two-dimensional Euclidean defect conformal field localized on a particular timeslice in a three-dimensional conformal field theory on de Sitter spacetime. The defect conformal field theory generates a natural action of the Virasoro algebra. The large radius of curvature limit ℓ → ∞ yields spacetimes with nontrivial extended-BMS charges corresponding to a single set of Virasoro charges.
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Lowe, D.A., Ramirez, D.M. BMS symmetry via AdS/CFT. J. High Energ. Phys. 2021, 75 (2021). https://doi.org/10.1007/JHEP01(2021)075
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DOI: https://doi.org/10.1007/JHEP01(2021)075