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

被引:23
作者
Barvinsky, A. O. [1 ]
Deffayet, C. [2 ]
Kamenshchik, A. Yu [3 ,4 ,5 ]
机构
[1] PN Lebedev Phys Inst, Theory Dept, Moscow 119991, Russia
[2] Univ Paris 07, CEA, CNRS, Observ Paris,APC UMR 7164, F-75205 Paris 13, France
[3] Univ Bologna, Dipartmento Fis, I-40126 Bologna, Italy
[4] Ist Nazl Fis Nucl, I-40126 Bologna, Italy
[5] LD Landau Theoret Phys Inst, Moscow 119334, Russia
关键词
dark energy theory; string theory and cosmology; quantum field theory on curved space; physics of the early universe;
D O I
10.1088/1475-7516/2008/05/020
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
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.
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页数:17
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