Abstract
We consider a modified gravity theory, , in the metric formulation, which has been suggested to produce late-time acceleration in the Universe, while satisfying local fifth-force constraints. We investigate the parameter range for this theory, considering the regimes of early and late-time acceleration, big bang nucleosynthesis, and fifth-force constraints. We conclude that it is difficult to find a unique range of parameters for consistency of this theory.
- Received 3 August 2006
DOI:https://doi.org/10.1103/PhysRevD.74.064028
©2006 American Physical Society