Journal
PHYSICAL REVIEW LETTERS
Volume 102, Issue 22, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.102.221101
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Funding
- Brazilian Research Agency CNPq
- OAR
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Several authors have argued that self-consistent f(R) gravity models distinct from the cold dark matter model with a cosmological constant (Lambda CDM) are almost ruled out. Confronting such claims, we present a particular two-parameter f(R) model that (a) is cosmologically viable and distinguishable from Lambda CDM, (b) is compatible with the existence of relativistic stars, (c) is free of singularities of the Ricci scalar during the cosmological evolution, and (d) allows the addition of high-curvature corrections that could be relevant for inflation.
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