CFT driven cosmology and the DGP/CFT correspondence

Journal Article · Sat May 01 04:00:00 EDT 2010 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2010/05/034· OSTI ID:22272896

Barvinsky, A. O. ^[1]; Deffayet, C. ^[2]

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1. Theory Department, Lebedev Physics Institute, Leninsky Prospect 53, Moscow 119991 (Russian Federation)
2. APC UMR 7164 (CNRS, Univ. Paris 7, CEA, Obs. de Paris), 12 rue Alice Domon et Léonie Duquet, 75205 Paris Cedex 13 (France)

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 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.

• OSTI ID: 22272896
• Journal Information: Journal of Cosmology and Astroparticle Physics, Journal Name: Journal of Cosmology and Astroparticle Physics Journal Issue: 05 Vol. 2010; ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
79 ASTRONOMY AND ASTROPHYSICS
BRANES
CONFORMAL INVARIANCE
COSMOLOGICAL CONSTANT
COSMOLOGY
DE SITTER GROUP
DE SITTER SPACE
DUALITY
EUCLIDEAN SPACE
GRAVITATION
INFLATIONARY UNIVERSE
MANY-DIMENSIONAL CALCULATIONS
QUANTUM FIELD THEORY
SCHWARZSCHILD METRIC
SINGULARITY
SUPERSYMMETRY