Accelerating Cosmologies from Compactification

Details Accelerating Cosmologies from Compactification Accelerating Cosmologies from Compactification

2003-03-11

arxiv.org/abs/hep-th/0303097v3

Phys.Rev.Lett.91:061302,2003

Physics

High Energy Physics

High Energy Physics - Theory

4 pages, 2 figures, REVTeX4, clarifications and references added

Scientific paper

10.1103/PhysRevLett.91.061302

A solution of the (4+n)-dimensional vacuum Einstein equations is found for which spacetime is compactified on a compact hyperbolic manifold of time-varying volume to a flat four-dimensional FLRW cosmology undergoing accelerated expansion in Einstein conformal frame. This shows that the `no-go' theorem forbidding acceleration in `standard' (time-independent) compactifications of string/M-theory does not apply to `cosmological' (time-dependent) hyperbolic compactifications.

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