Isotropy and Stability of the Brane

Details Isotropy and Stability of the Brane Isotropy and Stability of the Brane

2001-03-11

arxiv.org/abs/hep-ph/0103112v2

Phys.Rev. D64 (2001) 063506

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 2 figures, corrected some typos and title

Scientific paper

10.1103/PhysRevD.64.063506

We reexamine Wald's no-hair theorem for global anisotropy in the brane world scenarios. We derive a set of sufficient conditions which must be satisfied by the brane matter and bulk metric so that a homogeneous and anisotropic brane asymptotically evolves to a de Sitter spacetime in the presence of a positive cosmological constant on the brane. We discuss the violations of these sufficient conditions and we show that a negative nonlocal energy density or the presence of strong anisotropic stress (i.e., a magnetic field) may lead the brane to collapse. We discuss the generality of these conditions.

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