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