Causality and black holes in spacetimes with a preferred foliation
We develop a framework that facilitates the study of the causal structure of spacetimes with a causally preferred foliation. Such spacetimes may arise as solutions of Lorentz-violating theories, e.g. Hořava gravity. Our framework allows us to rigorously define concepts such as black/white holes and...
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| Format: | Article |
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IOP Publishing
2016
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| Online Access: | https://eprints.nottingham.ac.uk/39759/ |
| _version_ | 1848795907073507328 |
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| author | Bhattacharyya, Jishnu Colombo, Mattia Sotiriou, Thomas P. |
| author_facet | Bhattacharyya, Jishnu Colombo, Mattia Sotiriou, Thomas P. |
| author_sort | Bhattacharyya, Jishnu |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | We develop a framework that facilitates the study of the causal structure of spacetimes with a causally preferred foliation. Such spacetimes may arise as solutions of Lorentz-violating theories, e.g. Hořava gravity. Our framework allows us to rigorously define concepts such as black/white holes and to formalize the notion of a ‘universal horizon’, that has been previously introduced in the simpler setting of static and spherically symmetric geometries. We also touch upon the issue of development and prove that universal horizons are Cauchy horizons when evolution depends on boundary data or asymptotic conditions. We establish a local characterisation of universal horizons in stationary configurations. Finally, under the additional assumption of axisymmetry, we examine under which conditions these horizons are cloaked by Killing horizons, which can act like usual event horizons for low-energy excitations. |
| first_indexed | 2025-11-14T19:39:32Z |
| format | Article |
| id | nottingham-39759 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:39:32Z |
| publishDate | 2016 |
| publisher | IOP Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-397592020-05-04T18:15:03Z https://eprints.nottingham.ac.uk/39759/ Causality and black holes in spacetimes with a preferred foliation Bhattacharyya, Jishnu Colombo, Mattia Sotiriou, Thomas P. We develop a framework that facilitates the study of the causal structure of spacetimes with a causally preferred foliation. Such spacetimes may arise as solutions of Lorentz-violating theories, e.g. Hořava gravity. Our framework allows us to rigorously define concepts such as black/white holes and to formalize the notion of a ‘universal horizon’, that has been previously introduced in the simpler setting of static and spherically symmetric geometries. We also touch upon the issue of development and prove that universal horizons are Cauchy horizons when evolution depends on boundary data or asymptotic conditions. We establish a local characterisation of universal horizons in stationary configurations. Finally, under the additional assumption of axisymmetry, we examine under which conditions these horizons are cloaked by Killing horizons, which can act like usual event horizons for low-energy excitations. IOP Publishing 2016-10-28 Article PeerReviewed Bhattacharyya, Jishnu, Colombo, Mattia and Sotiriou, Thomas P. (2016) Causality and black holes in spacetimes with a preferred foliation. Classical and Quantum Gravity, 33 (23). 235003/1-235003/45. ISSN 1361-6382 Modified gravity Lorentz violations Black holes Causality http://iopscience.iop.org/article/10.1088/0264-9381/33/23/235003/meta doi:10.1088/0264-9381/33/23/235003 doi:10.1088/0264-9381/33/23/235003 |
| spellingShingle | Modified gravity Lorentz violations Black holes Causality Bhattacharyya, Jishnu Colombo, Mattia Sotiriou, Thomas P. Causality and black holes in spacetimes with a preferred foliation |
| title | Causality and black holes in spacetimes with a preferred foliation |
| title_full | Causality and black holes in spacetimes with a preferred foliation |
| title_fullStr | Causality and black holes in spacetimes with a preferred foliation |
| title_full_unstemmed | Causality and black holes in spacetimes with a preferred foliation |
| title_short | Causality and black holes in spacetimes with a preferred foliation |
| title_sort | causality and black holes in spacetimes with a preferred foliation |
| topic | Modified gravity Lorentz violations Black holes Causality |
| url | https://eprints.nottingham.ac.uk/39759/ https://eprints.nottingham.ac.uk/39759/ https://eprints.nottingham.ac.uk/39759/ |