Journal
PHYSICAL REVIEW D
Volume 74, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.74.064028
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We consider a modified gravity theory, f(R)=R-a/R-n+bR(m), 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.
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