Accelerating Cosmologies from Compactification

Abstract

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.

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

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Cited by in corpus (178)

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• Bulk inflaton shadows of vacuum gravity
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• Warped de Sitter compactifications in the scalar-tensor theory
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• Manifestations of String Theory in Astrophysical Data and at the LHC
• Time Dependent String Compactification: Towards Bouncing Cosmology
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• On Some Accelerating Cosmological Kaluza-Klein Models
• Spatially homogeneous solutions of vacuum Einstein equations in general dimensions
• A positive cosmological constant as a geometrical artifact