Constraining f(R) Gravity as a Scalar Tensor Theory

Abstract

We search for viable f(R) theories of gravity, making use of the equivalence between such theories and scalar-tensor gravity. We find that models can be made consistent with solar system constraints either by giving the scalar a high mass or by exploiting the so-called chameleon effect. However, in both cases, it appears likely that any late-time cosmic acceleration will be observationally indistinguishable from acceleration caused by a cosmological constant. We also explore further observational constraints from, e.g., big bang nucleosynthesis and inflation.

15 pages, 5 figures

Cited by in corpus (30)

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• Weak Lensing Probes of Modified Gravity
• Constraints on scalar-tensor models of dark energy from observational and local gravity tests
• Cosmological Constraints on f(R) Acceleration Models
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• Generalized virial theorem in f(R) gravity
• Density perturbations in f(R) gravity theories in metric and Palatini formalisms
• Adiabatic instability in coupled dark energy-dark matter models
• Dark energy, inflation and dark matter from modified F(R) gravity
• The Cosmology of Ricci-Tensor-Squared Gravity in the Palatini Variational Approach
• Hydrogen atom in Palatini theories of gravity
• How (Not) to Palatini
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• New interactions in the dark sector mediated by dark energy
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• Perihelion precession for modified Newtonian gravity
• Generalized Israel Junction Conditions for a Fourth-Order Brane World
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• Testing Alternative Theories of Dark Matter with the CMB
• Problems with Modified Theories of Gravity, as Alternatives to Dark Energy
• Dynamics of Solutions of $f(R)$ Theory