Boundary Conditions for Extremal Black Holes from 2d Gravity
SciPost Phys. 16, 141 (2024) We devise new boundary conditions for the near-horizon geometries of extremal BTZ and Kerr black holes, as well as for the ultra-cold limit of the Kerr-de Sitter black hole. These boundary conditions are obtained as the higher-dimensional uplift of recently proposed boun...
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| Zusammenfassung: | SciPost Phys. 16, 141 (2024) We devise new boundary conditions for the near-horizon geometries of extremal
BTZ and Kerr black holes, as well as for the ultra-cold limit of the Kerr-de
Sitter black hole. These boundary conditions are obtained as the
higher-dimensional uplift of recently proposed boundary conditions in
two-dimensional gravity. Their asymptotic symmetries consist in the semi-direct
product of a Virasoro and a current algebra, of which we determine the central
extensions. |
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| DOI: | 10.48550/arxiv.2312.08353 |