English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/96481
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:

Title

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

AuthorsBamba, Kazuharu; Makarenko, Andrey N.; Myagky, Alexandr N.; Nojiri, Shin'ichi; Odintsov, Sergei D.
KeywordsCosmic singularity
Dark energy theory
Issue Date8-Jan-2014
PublisherInstitute of Physics Publishing
CitationJournal of Cosmology and Astroparticle Physics (JCAP) 01: 008 (2014)
AbstractWe 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.
Publisher version (URL)http://dx.doi.org/10.1088/1475-7516/2014/01/008
URIhttp://hdl.handle.net/10261/96481
DOIhttp://dx.doi.org/10.1088/1475-7516/2014/01/008
E-ISSN1475-7516
Appears in Collections:(ICE) Artículos
Files in This Item:
File Description SizeFormat 
bounce_cosmology_Bamba.pdf669,19 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.