Disappearing cosmological constant in f(R) gravity

  title={Disappearing cosmological constant in f(R) gravity},
  author={Alexei A. Starobinsky},
  journal={JETP Letters},
For higher-derivative f(R) gravity, where R is the Ricci scalar, a class of models is proposed, which produce viable cosmology different from the ACDM at recent times and satisfy cosmological, Solar System, and laboratory tests. These models have both flat and de Sitter spacetimes as particular solutions in the absence of matter. Thus, a cosmological constant is zero in a flat spacetime, but appears effectively in a curved one for sufficiently large R. A “smoking gun” for these models would be… 

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Modified gravity with disappearing cosmological constant

  • L. Granda
  • Physics
    Journal of High Energy Physics
  • 2021
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Delicate f(R) gravity models with a disappearing cosmological constant and observational constraints on the model parameters

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Cosmology based on f(R) gravity with 𝒪(1) eV sterile neutrino

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ΛCDM without cosmological constant

  • L. Granda
  • Physics
    Classical and Quantum Gravity
  • 2021
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Large scale structure of f(R) gravity

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Curvature Quintessence

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This review summarizes recent attempts to reconstruct the expansion history of the universe and to probe the nature of dark energy. Reconstruction methods can be broadly classified into parametric