Spontaneous scalarization of black holes and compact stars from a Gauss-Bonnet coupling
We identify a class of scalar-tensor theories with coupling between the scalar and the Gauss–Bonnet invariant that exhibit spontaneous scalarization for both black holes and compact stars. In particular, these theories formally admit all of the stationary solutions of general relativity, but these a...
| 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/51109/ |
| _version_ | 1848798418588139520 |
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| author | Silva, Hector O. Sakstein, Jeremy Gualtieri, Leonardo Sotiriou, Thomas P. Berti, Emanuele |
| author_facet | Silva, Hector O. Sakstein, Jeremy Gualtieri, Leonardo Sotiriou, Thomas P. Berti, Emanuele |
| author_sort | Silva, Hector O. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | We identify a class of scalar-tensor theories with coupling between the scalar and the Gauss–Bonnet invariant that exhibit spontaneous scalarization for both black holes and compact stars. In particular, these theories formally admit all of the stationary solutions of general relativity, but these are not dynamically preferred if certain conditions are satisfied. Remarkably, black holes exhibit scalarization if their mass lies within one of many narrow bands. We find evidence that scalarization can occur in neutron stars as well. |
| first_indexed | 2025-11-14T20:19:27Z |
| format | Article |
| id | nottingham-51109 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T20:19:27Z |
| publishDate | 2018 |
| publisher | American Physical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-511092018-04-13T14:57:21Z https://eprints.nottingham.ac.uk/51109/ Spontaneous scalarization of black holes and compact stars from a Gauss-Bonnet coupling Silva, Hector O. Sakstein, Jeremy Gualtieri, Leonardo Sotiriou, Thomas P. Berti, Emanuele We identify a class of scalar-tensor theories with coupling between the scalar and the Gauss–Bonnet invariant that exhibit spontaneous scalarization for both black holes and compact stars. In particular, these theories formally admit all of the stationary solutions of general relativity, but these are not dynamically preferred if certain conditions are satisfied. Remarkably, black holes exhibit scalarization if their mass lies within one of many narrow bands. We find evidence that scalarization can occur in neutron stars as well. American Physical Society 2018-03-30 Article PeerReviewed application/pdf en https://eprints.nottingham.ac.uk/51109/1/Spontaneous%20scalarization%20of%20black%20holes%20and%20compact.pdf Silva, Hector O., Sakstein, Jeremy, Gualtieri, Leonardo, Sotiriou, Thomas P. and Berti, Emanuele (2018) Spontaneous scalarization of black holes and compact stars from a Gauss-Bonnet coupling. Physical Review Letters, 120 (13). p. 131104. ISSN 0031-9007 https://doi.org/10.1103/PhysRevLett.120.131104 doi:10.1103/PhysRevLett.120.131104 doi:10.1103/PhysRevLett.120.131104 |
| spellingShingle | Silva, Hector O. Sakstein, Jeremy Gualtieri, Leonardo Sotiriou, Thomas P. Berti, Emanuele Spontaneous scalarization of black holes and compact stars from a Gauss-Bonnet coupling |
| title | Spontaneous scalarization of black holes and compact stars from a Gauss-Bonnet coupling |
| title_full | Spontaneous scalarization of black holes and compact stars from a Gauss-Bonnet coupling |
| title_fullStr | Spontaneous scalarization of black holes and compact stars from a Gauss-Bonnet coupling |
| title_full_unstemmed | Spontaneous scalarization of black holes and compact stars from a Gauss-Bonnet coupling |
| title_short | Spontaneous scalarization of black holes and compact stars from a Gauss-Bonnet coupling |
| title_sort | spontaneous scalarization of black holes and compact stars from a gauss-bonnet coupling |
| url | https://eprints.nottingham.ac.uk/51109/ https://eprints.nottingham.ac.uk/51109/ https://eprints.nottingham.ac.uk/51109/ |