CFT driven cosmology and the DGP/CFT correspondence

Abstract

We present a dual 5D braneworld picture of a recently suggested model for a microcanonical description of a 4D cosmology driven by a conformal field theory with a large number of quantum fields. The 5D side of the duality relation is represented by a generalized brane induced gravity model in a Schwarzschild-de Sitter bulk. The values of the bulk cosmological and the induced 4D cosmological constants are determined by requiring the absence of conical singularity at the de Sitter horizon of the Euclidean Schwarzschild-de Sitter bulk. Those values belong to the vicinity of the upper bound of a range of admissible values for the cosmological constant. This upper bound is enforced by the 4D CFT and coincides with the natural gravitational cutoff in a theory with many quantum species. The resulting DGP/CFT duality suggests the possibility of a new type of {\em background independent} correspondence. A mechanism for inverting the sign of the effective cosmological constant is found, which might reconcile a negative value of the primordial cosmological constant compatible with supersymmetry with the one required by inflationary cosmology.

LaTeX, 23 pages, 3 figures

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Cited by in corpus (19)

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• Grand Rip and Grand Bang/Crunch cosmological singularities
• Dynamical Dark Energy and Spontaneously Generated Gravity
• CFT driven cosmology and conformal higher spin fields
• Initial directional singularity in inflationary models
• Thermal power spectrum in the CFT driven cosmology
• New type of hill-top inflation
• New futures for cosmological models
• On suppression of topological transitions in quantum gravity
• The path integral for the statistical sum of the microcanonical ensemble in cosmology
• Statistical sum in the CFT driven cosmology
• Singularities in inflationary cosmological models
• Monodromies and functional determinants in the CFT driven quantum cosmology
• The Osgood Criterion and Finite-Time Cosmological Singularities
• Preferred basis, decoherence and a quantum state of the Universe
• Cosmic anisotropic doomsday in Bianchi type I universes