Detecting extra dimensions with gravity-wave spectroscopy: the black-string brane world |
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Authors: | Seahra Sanjeev S Clarkson Chris Maartens Roy |
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Institution: | Institute of Cosmology & Gravitation, University of Portsmouth, Portsmouth PO1 2EG, United Kingdom. |
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Abstract: | Using the black string between two branes as a model of a brane-world black hole, we compute the gravity-wave perturbations and identify the features arising from the additional polarizations of the graviton. The standard four-dimensional gravitational wave signal acquires late-time oscillations due to massive modes of the graviton. The Fourier transform of these oscillations shows a series of spikes associated with the masses of the Kaluza-Klein modes, providing in principle a spectroscopic signature of extra dimensions. |
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