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Detecting extra dimensions with gravity wave spectroscopy: the black string brane-world

Sanjeev S. Seahra·Chris Clarkson·Roy Maartens
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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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Sanjeev S. Seahra, Chris Clarkson, Roy Maartens. 2005-02-28. Detecting extra dimensions with gravity wave spectroscopy: the black string brane-world. https://doi.org/10.1103/physrevlett.94.121302

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