Quasinormal modes of a black hole with a cloud of strings in Einstein–Gauss–Bonnet gravity
| Autor: | Godonou I. Salako, Valdir B. Bezerra, J. P. Morais Graça |
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| Rok vydání: | 2017 |
| Předmět: |
Physics
Spacetime 010308 nuclear & particles physics General relativity FOS: Physical sciences Astronomy and Astrophysics General Relativity and Quantum Cosmology (gr-qc) 01 natural sciences String (physics) General Relativity and Quantum Cosmology WKB approximation Black hole High Energy Physics::Theory Space and Planetary Science Gauss–Bonnet gravity 0103 physical sciences Tensor 010306 general physics Scalar field Mathematical Physics Mathematical physics |
| Zdroj: | International Journal of Modern Physics D. 26:1750113 |
| ISSN: | 1793-6594 0218-2718 |
| DOI: | 10.1142/s0218271817501139 |
| Popis: | The quasinormal modes for a scalar field in the background spacetime corresponding to a black hole, with a cloud of strings, in Einstein-Gauss-Bonnet gravity, and the tensor quasinormal modes corresponding to perturbations in such spacetime, were both calculated using the WKB approximation. In the obtained results we emphasize the role played by the parameter associated with the string cloud, comparing them with the results already obtained for the Boulware-Deser metric. We also study how the Gauss-Bonnet correction to general relativity affects the results for the quasinormal modes, comparing them with the same background in general relativity. 15 pages, 7 figures; To appear in IJMPD |
| Databáze: | OpenAIRE |
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