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Slowly rotating black holes in Einstein-æther theory

Barausse, Enrico; Sotiriou, Thomas P.; Vega, Ian

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Authors

Enrico Barausse

THOMAS SOTIRIOU Thomas.Sotiriou@nottingham.ac.uk
Professor of Gravitational Physics

Ian Vega



Abstract

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.

Citation

Barausse, E., Sotiriou, T. P., & Vega, I. (2016). Slowly rotating black holes in Einstein-æther theory. Physical Review D, 93(4), Article 44044. https://doi.org/10.1103/PhysRevD.93.044044

Journal Article Type Article
Acceptance Date Dec 31, 2015
Publication Date Feb 16, 2016
Deposit Date Dec 21, 2016
Publicly Available Date Dec 21, 2016
Journal Physical Review D
Print ISSN 2470-0010
Electronic ISSN 2470-0029
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 93
Issue 4
Article Number 44044
DOI https://doi.org/10.1103/PhysRevD.93.044044
Public URL https://nottingham-repository.worktribe.com/output/776155
Publisher URL http://dx.doi.org/10.1103/PhysRevD.93.044044
Additional Information ©2016 American Physical Society
Contract Date Dec 21, 2016

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