Matter Instability in Theories with Modified Induced Gravity. (6th December 2012)

• Record Type: Journal Article
• Authors: Nozari, Kourosh; Kiani, Faeze
• Other Names: Siopsis George Academic Editor.
• Is Part Of: Advances in high energy physics. Volume 2012(2012)
• Publication Date: 2012-12-06
• Subjects: Particles (Nuclear physics) -- Periodicals; Particles (Nuclear physics); Periodicals; 539.76
• DOI: 10.1155/2012/679156
• Languages: English
• ISSNs: 1687-7357

Abstract

Abstract : Matter stability is a necessary condition to have a cosmologically viable model. Modified gravity in the spirit of f ( R ) theories suffers from matter instability in some subdomains of the model parameter space. It has been shown recently that the late-time cosmic speedup can be explained through an f ( R ) -modified induced gravity program. In this paper, we study the issue of matter instability in a braneworld setup with modified induced gravity.