Slowly rotating black holes in Einstein-æther theory
We study slowly rotating, asymptotically flat black holes in Einstein-æther theory and show that solutions that are free from naked finite area singularities form a two-parameter family. These parameters can be thought of as the mass and angular momentum of the black hole, while there are no indepen...
| Main Authors: | , , |
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| Format: | Article |
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American Physical Society
2016
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| Online Access: | https://eprints.nottingham.ac.uk/39495/ |
| _version_ | 1848795850180919296 |
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| author | Barausse, Enrico Sotiriou, Thomas P. Vega, Ian |
| author_facet | Barausse, Enrico Sotiriou, Thomas P. Vega, Ian |
| author_sort | Barausse, Enrico |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | We study slowly rotating, asymptotically flat black holes in Einstein-æther theory and show that solutions that are free from naked finite area singularities form a two-parameter family. These parameters can be thought of as the mass and angular momentum of the black hole, while there are no independent æ ther charges. We also show that the æ ther has nonvanishing vorticity throughout the spacetime, as a result of which there is no hypersurface that resembles the universal horizon found in static, spherically symmetric solutions. Moreover, for experimentally viable choices of the coupling constants, the frame-dragging potential of our solutions only shows percent-level deviations from the corresponding quantities in General Relativity and Hořava gravity. Finally, we uncover and discuss several subtleties in the correspondence between Einstein-æther theory and Hořava gravity solutions in the c ω →∞ limit. |
| first_indexed | 2025-11-14T19:38:38Z |
| format | Article |
| id | nottingham-39495 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:38:38Z |
| publishDate | 2016 |
| publisher | American Physical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-394952020-05-04T17:36:52Z https://eprints.nottingham.ac.uk/39495/ Slowly rotating black holes in Einstein-æther theory Barausse, Enrico Sotiriou, Thomas P. Vega, Ian We study slowly rotating, asymptotically flat black holes in Einstein-æther theory and show that solutions that are free from naked finite area singularities form a two-parameter family. These parameters can be thought of as the mass and angular momentum of the black hole, while there are no independent æ ther charges. We also show that the æ ther has nonvanishing vorticity throughout the spacetime, as a result of which there is no hypersurface that resembles the universal horizon found in static, spherically symmetric solutions. Moreover, for experimentally viable choices of the coupling constants, the frame-dragging potential of our solutions only shows percent-level deviations from the corresponding quantities in General Relativity and Hořava gravity. Finally, we uncover and discuss several subtleties in the correspondence between Einstein-æther theory and Hořava gravity solutions in the c ω →∞ limit. American Physical Society 2016-02-16 Article PeerReviewed Barausse, Enrico, Sotiriou, Thomas P. and Vega, Ian (2016) Slowly rotating black holes in Einstein-æther theory. Physical Review D, 93 (4). 44044/1-44044/23. ISSN 2470-0029 http://dx.doi.org/10.1103/PhysRevD.93.044044 doi:10.1103/PhysRevD.93.044044 doi:10.1103/PhysRevD.93.044044 |
| spellingShingle | Barausse, Enrico Sotiriou, Thomas P. Vega, Ian Slowly rotating black holes in Einstein-æther theory |
| title | Slowly rotating black holes in Einstein-æther theory |
| title_full | Slowly rotating black holes in Einstein-æther theory |
| title_fullStr | Slowly rotating black holes in Einstein-æther theory |
| title_full_unstemmed | Slowly rotating black holes in Einstein-æther theory |
| title_short | Slowly rotating black holes in Einstein-æther theory |
| title_sort | slowly rotating black holes in einstein-æther theory |
| url | https://eprints.nottingham.ac.uk/39495/ https://eprints.nottingham.ac.uk/39495/ https://eprints.nottingham.ac.uk/39495/ |