Dark Energy, Induced Gravity and Broken Scale Invariance
classification
🌌 astro-ph
gr-qchep-th
keywords
gravitymodelcosmologicalfieldgammainducedscalarsigma
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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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