English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/5459
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar EndNote (RIS)Exportar EndNote (RIS)
Título

Induced gravity on intersecting brane-worlds. Part I: Maximally symmetric solutions

Autor Corradini, Olindo; Koyama, Kazuya; Tasinato, Gianmassimo
Palabras clave High Energy Physics - Theory
Astrophysics
General Relativity and Quantum Cosmology
Fecha de publicación 12-mar-2008
EditorAmerican Physical Society
Citación arXiv:0712.0385v2 [hep-th]
Serie IFT-UAM/CSIC-08-33
ResumenWe explore models of intersecting brane-worlds with induced gravity terms on codimension one branes and on their intersection. Maximally symmetric solutions for the branes and the intersection are found. We find new self-accelerating solutions. In a 6d spacetime, the solutions realize the see-saw modification of gravity where the UV scale of the modification to 4d gravity is determined by 6d Planck scale given by M6 ~ 10^{-3} eV and the IR scale of the modification is determined by M6^2/M4 ~ H0 ~ 10^{-42} GeV where H0 is present-day Hubble scale. We find that it is increasingly difficult to construct phenomenologically viable models in higher-dimensional spacetime due to the necessity to have the lower value for the fundamental Planck scale to realize the late time acceleration. It is found that the system also admits self-tuning solutions where the tension at the intersection does not change the geometry of the intersection. The induced gravity terms can avoid the necessity to compactify the extra dimensions. Finally, we discuss the possibility to have ordinary matter at the intersection, without introducing any regularisation, using the induced gravity terms.
Descripción Submitted on 3 Dec 2007 (v1), last revised 12 Mar 2008 (this version, v2).-- 16 pages.-- Version to appear in Phys Rev D.
URI http://hdl.handle.net/10261/5459
ISSN0556-2821
Aparece en las colecciones: (IFT) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
0712.0385v2.pdf212,71 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.