Thick brane isotropization in the 5D anisotropic standing wave braneworld model

Details Thick brane isotropization in the 5D anisotropic standing wave braneworld model Thick brane isotropization in the 5D anisotropic standing wave braneworld model

2012-01-22

arxiv.org/abs/1201.4569v1

Physics

High Energy Physics

High Energy Physics - Theory

10 pages in latex

Scientific paper

We study a smooth cosmological solution of the 5D anisotropic standing wave braneworld model generated by gravity coupled to a phantom-like scalar field. In this model the brane emits anisotropic waves into the bulk with different amplitudes along different spatial dimensions. We found a natural mechanism which isotropizes the braneworld, rendering a 3-brane with de Sitter symmetry embedded in a 5D de Sitter space-time for a wide class of initial conditions. The resulting thick geometrical braneworld (a de Sitter 3-brane) possesses a series of remarkable features. By explicitly solving the bulk field equations we are able to give a physical interpretation of the anisotropic dissipation: as the anisotropic energy on the 3-brane rapidly leaks into the bulk, through the nontrivial Weyl tensor components, the bulk becomes less isotropic.

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