Perturbations and quasi-normal modes of black holes in Einstein Aether theory
Abstract
We develop a new method for calculation of quasi-normal modes of black holes, when the effective potential, which governs black hole perturbations, is known only numerically in some region near the black hole. This method can be applied to perturbations of a wide class of numerical black hole solutions. We apply it to the black holes in the Einstein-Aether theory, a theory where general relativity is coupled to a unit time-like vector field, in order to observe local Lorentz symmetry violation. We found that in the non-reduced Einstein-Aether theory, real oscillation frequency and damping rate of quasi-normal modes are larger than those of Schwarzschild black holes in the Einstein theory.
- Publication:
-
Physics Letters B
- Pub Date:
- January 2007
- DOI:
- 10.1016/j.physletb.2006.11.036
- arXiv:
- arXiv:gr-qc/0605082
- Bibcode:
- 2007PhLB..644..186K
- Keywords:
-
- 04.30.Nk;
- 04.50.+h;
- Wave propagation and interactions;
- Gravity in more than four dimensions Kaluza-Klein theory unified field theories;
- alternative theories of gravity;
- General Relativity and Quantum Cosmology
- E-Print:
- 6 pages, 3 figures, RevTex, to be published in Phys. Lett. B