Brane Worlds, String Cosmology, and AdS/CFT

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...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Anchordoqui, Luis Alfredo, Edelstein, José D., Núñez, Carlos, Pérez Bergliaffa, Santiago Esteban, Schvellinger, Martín Alejandro, Trobo, Marta Liliana, Zyserman, Fabio Iván
Formato: Articulo
Lenguaje:Inglés
Publicado: 2001
Materias:
Física
ADS/QCD correspondence
Physics
Spacetime
String cosmology
De Sitter universe
Discrete symmetry
Theoretical physics
DS/CFT correspondence
Brane
Classical mechanics
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/126583
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
Descripción
Sumario: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.

Ejemplares similares