By applying Buscher T-duality rules asymptotically to Brown-Henneaux boundary conditions, the authors construct a phase space for three-dimensional black strings whose asymptotic symmetry algebra contains bms2, bms3, and a twisted warped conformal algebra.
Uniqueness of the asymptotic AdS3 geometry
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abstract
We explicitly show that in (2+1) dimensions the general solution of the Einstein equations with negative cosmological constant on a neigbourhood of timelike spatial infinity can be obtained from BTZ metrics by coordinate transformations corresponding geometrically to deformations of their spatial infinity surface. Thus, whatever the topology and geometry of the bulk, the metric on the timelike extremities is BTZ.
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Asymptotic T-duality in three dimensions
By applying Buscher T-duality rules asymptotically to Brown-Henneaux boundary conditions, the authors construct a phase space for three-dimensional black strings whose asymptotic symmetry algebra contains bms2, bms3, and a twisted warped conformal algebra.