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American Physical Society, Physical Review D, 4(70), 2004

DOI: 10.1103/physrevd.70.043542

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Brane World Cosmological Perturbations

Journal article published in 2004 by Adenauer G. Casali ORCID, Elcio Abdalla, Bin Wang
This paper is available in a repository.
This paper is available in a repository.

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Abstract

We consider a brane world and its gravitational linear perturbations. We present a general solution of the perturbations in the bulk and find the complete perturbed junction conditions for generic brane dynamics. We also prove that (spin 2) gravitational waves in the great majority of cases can only arise in connection with a non-vanishing anisotropic stress. This has far reaching consequences for inflation in the brane world. Moreover, contrary to the case of the radion, perturbations are stable. Comment: 16 pages, one figure