Revisiting the cuscuton as a Lorentz-violating gravity theory
The cuscuton is a scalar field with infinite speed of propagation. It was introduced in the context of cosmology but it has also been claimed to resemble Horava gravity in a certain limit. Here we revisit the cuscuton theory as a Lorentz-violating gravity theory. We clarify its relation with Horava...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2018
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| Online Access: | https://eprints.nottingham.ac.uk/51113/ |
| _version_ | 1848798419683901440 |
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| author | Bhattacharyya, Jishnu Coates, Andrew Colombo, Mattia Gümrükçüoğlu, A. Emir Sotiriou, Thomas P. |
| author_facet | Bhattacharyya, Jishnu Coates, Andrew Colombo, Mattia Gümrükçüoğlu, A. Emir Sotiriou, Thomas P. |
| author_sort | Bhattacharyya, Jishnu |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | The cuscuton is a scalar field with infinite speed of propagation. It was introduced in the context of cosmology but it has also been claimed to resemble Horava gravity in a certain limit. Here we revisit the cuscuton theory as a Lorentz-violating gravity theory. We clarify its relation with Horava gravity and Einstein-æther theory, analyze its causal structure, and consider its initial value formulation. Finally, we discuss to which extent the cuscuton theory can be used as a proxy for Horava gravity in the context of gravitational collapse and formation of universal horizons. |
| first_indexed | 2025-11-14T20:19:29Z |
| format | Article |
| id | nottingham-51113 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T20:19:29Z |
| publishDate | 2018 |
| publisher | American Physical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-511132018-04-13T18:11:34Z https://eprints.nottingham.ac.uk/51113/ Revisiting the cuscuton as a Lorentz-violating gravity theory Bhattacharyya, Jishnu Coates, Andrew Colombo, Mattia Gümrükçüoğlu, A. Emir Sotiriou, Thomas P. The cuscuton is a scalar field with infinite speed of propagation. It was introduced in the context of cosmology but it has also been claimed to resemble Horava gravity in a certain limit. Here we revisit the cuscuton theory as a Lorentz-violating gravity theory. We clarify its relation with Horava gravity and Einstein-æther theory, analyze its causal structure, and consider its initial value formulation. Finally, we discuss to which extent the cuscuton theory can be used as a proxy for Horava gravity in the context of gravitational collapse and formation of universal horizons. American Physical Society 2018-03-20 Article PeerReviewed application/pdf en https://eprints.nottingham.ac.uk/51113/1/PhysRevD.97.064020.pdf Bhattacharyya, Jishnu, Coates, Andrew, Colombo, Mattia, Gümrükçüoğlu, A. Emir and Sotiriou, Thomas P. (2018) Revisiting the cuscuton as a Lorentz-violating gravity theory. Physical Review D, 97 (6). 064020. ISSN 2470-0010 https://journals.aps.org/prd/abstract/10.1103/PhysRevD.97.064020 doi:10.1103/PhysRevD.97.064020 doi:10.1103/PhysRevD.97.064020 |
| spellingShingle | Bhattacharyya, Jishnu Coates, Andrew Colombo, Mattia Gümrükçüoğlu, A. Emir Sotiriou, Thomas P. Revisiting the cuscuton as a Lorentz-violating gravity theory |
| title | Revisiting the cuscuton as a Lorentz-violating gravity theory |
| title_full | Revisiting the cuscuton as a Lorentz-violating gravity theory |
| title_fullStr | Revisiting the cuscuton as a Lorentz-violating gravity theory |
| title_full_unstemmed | Revisiting the cuscuton as a Lorentz-violating gravity theory |
| title_short | Revisiting the cuscuton as a Lorentz-violating gravity theory |
| title_sort | revisiting the cuscuton as a lorentz-violating gravity theory |
| url | https://eprints.nottingham.ac.uk/51113/ https://eprints.nottingham.ac.uk/51113/ https://eprints.nottingham.ac.uk/51113/ |