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

作者：Barvinsky A O^*; Deffayet C; Kamenshchik A Yu

来源：Journal of Cosmology and Astroparticle Physics, 2008, (5): 020.

DOI：10.1088/1475-7516/2008/05/020

• dark energy theory
• string theory and cosmology
• quantum field theory on curved space
• physics of the early universe

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.

• 出版日期2008-5
• 单位中国地震局