Bubbles of nothing in binary black holes and black rings, and viceversa
Abstract We argue that expanding bubbles of nothing are a widespread feature of systems of black holes with multiple or non-spherical horizons, appearing as a limit of regions that are narrowly enclosed by the horizons. The bubble is a minimal cycle that links the Einstein-Rosen bridges in the syste...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2022-07-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP07(2022)007 |
| _version_ | 1828335302110871552 |
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| author | Marco Astorino Roberto Emparan Adriano Viganò |
| author_facet | Marco Astorino Roberto Emparan Adriano Viganò |
| author_sort | Marco Astorino |
| collection | DOAJ |
| description | Abstract We argue that expanding bubbles of nothing are a widespread feature of systems of black holes with multiple or non-spherical horizons, appearing as a limit of regions that are narrowly enclosed by the horizons. The bubble is a minimal cycle that links the Einstein-Rosen bridges in the system, and its expansion occurs through the familiar stretching of space in black hole interiors. We demonstrate this idea (which does not involve any Wick rotations) with explicit constructions in four and five dimensions. The geometries of expanding bubbles in these dimensions arise as a limit of, respectively, static black hole binaries and black rings. The limit is such that the separation between the two black holes, or the inner hole of the black ring, becomes very small, and the horizons of the black holes correspond to acceleration horizons of the bubbles. We also explain how a five-dimensional black hole binary gives rise to a different type of expanding bubble. We then show that bubble spacetimes can host black hole binaries and black rings in static equilibrium, with their gravitational attraction being balanced against the background spacetime expansion. Similar constructions are expected in six or more dimensions, but most of these solutions can be obtained only numerically. Finally, we argue that the Nariai solution can be regarded as containing an expanding circular bubble of nothing. |
| first_indexed | 2024-04-13T21:44:25Z |
| format | Article |
| id | doaj.art-5fce0b9356a94e38ae2ece44fa11d0f6 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-04-13T21:44:25Z |
| publishDate | 2022-07-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-5fce0b9356a94e38ae2ece44fa11d0f62022-12-22T02:28:39ZengSpringerOpenJournal of High Energy Physics1029-84792022-07-012022712410.1007/JHEP07(2022)007Bubbles of nothing in binary black holes and black rings, and viceversaMarco Astorino0Roberto Emparan1Adriano Viganò2Istituto Nazionale di Fisica Nucleare (INFN), Sezione di MilanoInstitució Catalana de Recerca i Estudis Avançats (ICREA)Istituto Nazionale di Fisica Nucleare (INFN), Sezione di MilanoAbstract We argue that expanding bubbles of nothing are a widespread feature of systems of black holes with multiple or non-spherical horizons, appearing as a limit of regions that are narrowly enclosed by the horizons. The bubble is a minimal cycle that links the Einstein-Rosen bridges in the system, and its expansion occurs through the familiar stretching of space in black hole interiors. We demonstrate this idea (which does not involve any Wick rotations) with explicit constructions in four and five dimensions. The geometries of expanding bubbles in these dimensions arise as a limit of, respectively, static black hole binaries and black rings. The limit is such that the separation between the two black holes, or the inner hole of the black ring, becomes very small, and the horizons of the black holes correspond to acceleration horizons of the bubbles. We also explain how a five-dimensional black hole binary gives rise to a different type of expanding bubble. We then show that bubble spacetimes can host black hole binaries and black rings in static equilibrium, with their gravitational attraction being balanced against the background spacetime expansion. Similar constructions are expected in six or more dimensions, but most of these solutions can be obtained only numerically. Finally, we argue that the Nariai solution can be regarded as containing an expanding circular bubble of nothing.https://doi.org/10.1007/JHEP07(2022)007Black HolesClassical Theories of Gravity |
| spellingShingle | Marco Astorino Roberto Emparan Adriano Viganò Bubbles of nothing in binary black holes and black rings, and viceversa Journal of High Energy Physics Black Holes Classical Theories of Gravity |
| title | Bubbles of nothing in binary black holes and black rings, and viceversa |
| title_full | Bubbles of nothing in binary black holes and black rings, and viceversa |
| title_fullStr | Bubbles of nothing in binary black holes and black rings, and viceversa |
| title_full_unstemmed | Bubbles of nothing in binary black holes and black rings, and viceversa |
| title_short | Bubbles of nothing in binary black holes and black rings, and viceversa |
| title_sort | bubbles of nothing in binary black holes and black rings and viceversa |
| topic | Black Holes Classical Theories of Gravity |
| url | https://doi.org/10.1007/JHEP07(2022)007 |
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