Brane world cosmological perturbations

Adenauer G. Casali, Elcio Abdalla, and Bin Wang
Phys. Rev. D 70, 043542 – Published 31 August 2004
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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 arise only 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, the perturbations are stable.

  • Received 15 March 2004

DOI:https://doi.org/10.1103/PhysRevD.70.043542

©2004 American Physical Society

Authors & Affiliations

Adenauer G. Casali* and Elcio Abdalla

  • Instituto De Fisica, Universidade De Sao Paulo, C. P. 66.318, CEP 05315-970, Sao Paulo, Brazil

Bin Wang

  • Department of Physics, Fudan University, Shanghai 200433, People’s Republic of China

  • *Electronic address: casali@fma.if.usp.br
  • Electronic address: eabdalla@fma.if.usp.br
  • Electronic address: binwang@fudan.ac.cn

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Vol. 70, Iss. 4 — 15 August 2004

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