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arxiv: 1511.08687 · v2 · submitted 2015-11-27 · ✦ hep-th · gr-qc

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Supertranslations and Superrotations at the Black Hole Horizon

Laura Donnay , Gaston Giribet , Hernan A. Gonzalez , Miguel Pino
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classification ✦ hep-th gr-qc
keywords blackholeasymptoticchargesgeneratedhorizonsupertranslationssymmetries
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We show that the asymptotic symmetries close to nonextremal black hole horizons are generated by an extension of supertranslations. This group is generated by a semidirect sum of Virasoro and Abelian currents. The charges associated with the asymptotic Killing symmetries satisfy the same algebra. When considering the special case of a stationary black hole, the zero mode charges correspond to the angular momentum and the entropy at the horizon.

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