English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/96481
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 53 veces en Web of Knowledge®  |  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

Bounce cosmology from F(R) gravity and F(R) bigravity

Autor Bamba, Kazuharu; Makarenko, Andrey N.; Myagky, Alexandr N.; Nojiri, Shin'ichi; Odintsov, Sergei D.
Palabras clave Cosmic singularity
Dark energy theory
Fecha de publicación 8-ene-2014
EditorInstitute of Physics Publishing
Citación Journal of Cosmology and Astroparticle Physics (JCAP) 01: 008 (2014)
ResumenWe reconstruct F(R) gravity models with exponential and power-law forms of the scale factor in which bounce cosmology can be realized. We explore the stability of the reconstructed models with analyzing the perturbations from the background solutions. Furthermore, we study an F(R) gravity model with a sum of exponentials form of the scale factor, where the bounce in the early universe as well as the late-time cosmic acceleration can be realized in a unified manner. As a result, we build a second order polynomial type model in terms of R and show that it could be stable. Moreover, when the scale factor is expressed by an exponential form, we derive F(R) gravity models of a polynomial type in case of the non-zero spatial curvature and that of a generic type in that of the zero spatial curvature. In addition, for an exponential form of the scale factor, an F(R) bigravity model realizing the bouncing behavior is reconstructed. It is found that in both the physical and reference metrics the bouncing phenomenon can occur, although in general the contraction and expansion rates are different each other.
Versión del editorhttp://dx.doi.org/10.1088/1475-7516/2014/01/008
URI http://hdl.handle.net/10261/96481
DOI10.1088/1475-7516/2014/01/008
E-ISSN1475-7516
Aparece en las colecciones: (ICE) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
bounce_cosmology_Bamba.pdf669,19 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.