Black hole memory effect
We compute the memory effect produced at the black hole horizon by a transient gravitational shock wave. As shown by Hawking, Perry, and Strominger (HPS) such a gravitational wave produces a deformation of the black hole geometry which from future null infinity is seen as a Bondi-Metzner-Sachs super...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_24700010_v98_n12_p_Donnay |
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todo:paper_24700010_v98_n12_p_Donnay2023-10-03T16:42:14Z Black hole memory effect Donnay, L. Giribet, G. González, H.A. Puhm, A. We compute the memory effect produced at the black hole horizon by a transient gravitational shock wave. As shown by Hawking, Perry, and Strominger (HPS) such a gravitational wave produces a deformation of the black hole geometry which from future null infinity is seen as a Bondi-Metzner-Sachs supertranslation. This results in a diffeomorphic but physically distinct geometry which differs from the original black hole by their charges at infinity. Here we give the complementary description of this physical process in the near-horizon region as seen by an observer hovering just outside the event horizon. From this perspective, in addition to a supertranslation the shock wave also induces a horizon superrotation. We compute the associated superrotation charge and show that its form agrees with the one obtained by HPS at infinity. In addition, there is a supertranslation contribution to the horizon charge, which measures the entropy change in the process. We then turn to electrically and magnetically charged black holes and generalize the near-horizon asymptotic symmetry analysis to Einstein-Maxwell theory. This reveals an additional infinite-dimensional current algebra that acts nontrivially on the horizon superrotations. Finally, we generalize the black hole memory effect to Reissner-Nordström black holes. © 2018 authors. Published by the American Physical Society. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_24700010_v98_n12_p_Donnay |
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Universidad de Buenos Aires |
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I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| description |
We compute the memory effect produced at the black hole horizon by a transient gravitational shock wave. As shown by Hawking, Perry, and Strominger (HPS) such a gravitational wave produces a deformation of the black hole geometry which from future null infinity is seen as a Bondi-Metzner-Sachs supertranslation. This results in a diffeomorphic but physically distinct geometry which differs from the original black hole by their charges at infinity. Here we give the complementary description of this physical process in the near-horizon region as seen by an observer hovering just outside the event horizon. From this perspective, in addition to a supertranslation the shock wave also induces a horizon superrotation. We compute the associated superrotation charge and show that its form agrees with the one obtained by HPS at infinity. In addition, there is a supertranslation contribution to the horizon charge, which measures the entropy change in the process. We then turn to electrically and magnetically charged black holes and generalize the near-horizon asymptotic symmetry analysis to Einstein-Maxwell theory. This reveals an additional infinite-dimensional current algebra that acts nontrivially on the horizon superrotations. Finally, we generalize the black hole memory effect to Reissner-Nordström black holes. © 2018 authors. Published by the American Physical Society. |
| format |
JOUR |
| author |
Donnay, L. Giribet, G. González, H.A. Puhm, A. |
| spellingShingle |
Donnay, L. Giribet, G. González, H.A. Puhm, A. Black hole memory effect |
| author_facet |
Donnay, L. Giribet, G. González, H.A. Puhm, A. |
| author_sort |
Donnay, L. |
| title |
Black hole memory effect |
| title_short |
Black hole memory effect |
| title_full |
Black hole memory effect |
| title_fullStr |
Black hole memory effect |
| title_full_unstemmed |
Black hole memory effect |
| title_sort |
black hole memory effect |
| url |
http://hdl.handle.net/20.500.12110/paper_24700010_v98_n12_p_Donnay |
| work_keys_str_mv |
AT donnayl blackholememoryeffect AT giribetg blackholememoryeffect AT gonzalezha blackholememoryeffect AT puhma blackholememoryeffect |
| _version_ |
1782023895572807680 |