Anomaly driven cosmology: big boost scenario and AdS/CFT correspondence

Journal Article · Thu May 15 04:00:00 EDT 2008 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2008/05/020· OSTI ID:22156633

Barvinsky, A O ^[1]; Deffayet, C ^[2]

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

We discuss the equations governing the cosmological evolution in a recently suggested new model of quantum initial conditions for the Universe. The effective Friedmann equation incorporates the effect of the conformal anomaly of quantum fields and, interestingly, shows that the vacuum Casimir energy of those fields is completely screened and does not gravitate. The cosmological evolution also features a new mechanism for a cosmological acceleration stage. This stage is followed by a big boost singularity-a rapid growth up to infinity of the scale factor acceleration parameter. We also briefly discuss the relation between our model, the AdS/CFT correspondence and RS and DGP braneworlds.

• OSTI ID: 22156633
• Journal Information: Journal of Cosmology and Astroparticle Physics, Journal Name: Journal of Cosmology and Astroparticle Physics Journal Issue: 05 Vol. 2008; ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
ANTI DE SITTER SPACE
BRANES
CONFORMAL INVARIANCE
COSMOLOGY
EQUATIONS
GALACTIC EVOLUTION
MINKOWSKI SPACE
STRING THEORY
UNIVERSE