Brane worlds, string cosmology, and AdS/CFT -: art. no. 084027

被引:24
作者
Anchordoqui, L [1 ]
Edelstein, J
Nuñez, C
Bergliaffa, SP
Schvellinger, M
Trobo, M
Zyserman, F
机构
[1] Northeastern Univ, Dept Phys, Boston, MA 02115 USA
[2] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA
[3] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, Brazil
[4] MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA
[5] Natl Univ La Plata, Dept Fis, RA-1900 La Plata, Argentina
来源
PHYSICAL REVIEW D | 2001年 / 64卷 / 08期
关键词
D O I
10.1103/PhysRevD.64.084027
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Using the thin-shell formalism we discuss the motion of domain walls in de Sitter and anti-de Sitter (AdS) time-dependent bulks. This motion results in a dynamics for the brane scale factor. We show that in the case of a clean brane the scale factor describes both singular and nonsingular universes, with phases of contraction and expansion. These phases can be understood as quotients of AdS spacetime by a discrete symmetry group. We discuss this effect in some detail, and suggest how the AdS/CFT correspondence could be applied to obtain a nonperturbative description of brane-world string cosmology.
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页数:13
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