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APS » Journals » Phys. Rev. D » Volume 69 » Issue 6
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Phys. Rev. D 69, 064040 (2004) [14 pages]

Cosmological tensor perturbations in the Randall-Sundrum model: Evolution in the near-brane limit

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Richard A. Battye
Jodrell Bank Observatory, Department of Physics and Astronomy, University of Manchester, Macclesfield, Cheshire SK11 9DL, United Kingdom

Carsten van de Bruck
Astrophysics Department, Oxford University, Keble Road, Oxford OX1 3RH, United Kingdom

Andrew Mennim
Department of Applied Mathematics and Theoretical Physics, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge CB3 OWA, United Kingdom

Received 20 August 2003; published 29 March 2004

We discuss the evolution of cosmological tensor perturbations in the Randall-Sundrum model with one brane. In Gaussian normal coordinates the wave equation is nonseparable, so we use the near-brane limit to perform the separation and study the evolution of perturbations. Massive excitations, which may also mix, decay outside the horizon, which could lead to some novel cosmological signatures.

© 2004 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.69.064040
DOI:
10.1103/PhysRevD.69.064040
PACS:
04.50.+h, 98.80.-k
 
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