Cosmological Solutions of Supergravity in Singular Spaces
Ph. Brax, A. C. Davis
Abstract
We study brane-world solutions of five-dimensional supergravity in singular spaces. We exhibit a self-tuned four-dimensional cosmological constant when five-dimensional supergravity is broken by an arbitrary tension on the brane-world. The brane-world metric is of the FRW type corresponding to a cosmological constant ΩΛ=5/7 and an equation of state ω=-5/7 which are consistent with experiment.
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