Dark Energy, Induced Gravity and Broken Scale Invariance

Details Dark Energy, Induced Gravity and Broken Scale Invariance Dark Energy, Induced Gravity and Broken Scale Invariance

2007-10-15

arxiv.org/abs/0710.2741v2

Phys.Lett.B659:466-470,2008

Astronomy and Astrophysics

Astrophysics

6 pages, 5 figures, 1 table: final version accepted for publication in PLB

Scientific paper

10.1016/j.physletb.2007.11.053

We study the cosmological evolution of an induced gravity model with a self-interacting scalar field $\sigma$ and in the presence of matter and radiation. Such model leads to Einstein Gravity plus a cosmological constant as a stable attractor among homogeneous cosmologies and is therefore a viable dark-energy (DE) model for a wide range of scalar field initial conditions and values for its positive $\gamma$ coupling to the Ricci curvature $\gamma \sigma^{2}R$.

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