Constraining f(R) Gravity as a Scalar Tensor Theory
Astrophysics
2008-11-26 v1 General Relativity and Quantum Cosmology
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.
Cite
@article{arxiv.astro-ph/0612569,
title = {Constraining f(R) Gravity as a Scalar Tensor Theory},
author = {Thomas Faulkner and Max Tegmark and Emory F. Bunn and Yi Mao},
journal= {arXiv preprint arXiv:astro-ph/0612569},
year = {2008}
}
Comments
15 pages, 5 figures