paper

Supertranslations and Superrotations at the Black Hole Horizon

arXiv:1511.08687 · doi:10.1103/PhysRevLett.116.091101

Abstract

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.

6 pages, references added, published version

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