Correspondence between modified gravity and 5D Ricci-flat cosmologies

Details Correspondence between modified gravity and 5D Ricci-flat cosmologies Correspondence between modified gravity and 5D Ricci-flat cosmologies

2008-05-22

arxiv.org/abs/0805.3475v2

Int.J.Mod.Phys.D18:1049-1058,2009

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages, 2 figures, Revised and accepted for publication in IJMPD

Scientific paper

10.1142/S0218271809014923

We study the correspondence between two theoretical frameworks for describing dark energy, $f(R)$ gravity and higher-dimensional Space-Time-Matter (STM) or induced-matter theory. We show that the Hubble expansion parameter in $f(R)$ gravity can be associated with a combination of metric functions in STM theory, and consider a specific example whose properties are consistent with late-time acceleration.

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