Extremal rotating black holes in Einsteinian cubic gravity
We obtain new solutions of Einsteinian cubic gravity coupled to a Maxwell field that describe the near-horizon geometry of charged and rotating black holes. We show that the AdS2×S2 near-horizon geometry of Reissner-Nordström black holes receives no corrections, but deviations with respect to the ex...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2020 |
| País: | España |
| Institución: | Universidad Autónoma de Madrid |
| Repositorio: | Biblos-e Archivo. Repositorio Institucional de la UAM |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.uam.es:10486/696439 |
| Acceso en línea: | http://hdl.handle.net/10486/696439 https://dx.doi.org/10.1103/PhysRevD.101.044016 |
| Access Level: | acceso abierto |
| Palabra clave: | Classical black holes General relativity equations & solutions Alternative gravity theories Física |
| Sumario: | We obtain new solutions of Einsteinian cubic gravity coupled to a Maxwell field that describe the near-horizon geometry of charged and rotating black holes. We show that the AdS2×S2 near-horizon geometry of Reissner-Nordström black holes receives no corrections, but deviations with respect to the extremal Kerr-Newman solution appear as we turn on the angular momentum. We construct the profile of these corrected geometries using both numerical methods and slowly spinning expansions, but we also find additional solutions that do not reduce to AdS2×S2 geometries in any limit and that do not have a counterpart in Einstein gravity. Quite remarkably, we are able to obtain closed-form exact expressions for the area and Wald's entropy of all of these solutions, and using this result, we analyze the phase space of extremal back holes in this theory. To the best of our knowledge, this is the first time the entropy of a rotating black hole in higher-order gravity has been exactly computed |
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