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Reconstructing modified gravity with holographic vacuum energy density

    https://doi.org/10.1142/S0218271819500524Cited by:5 (Source: Crossref)

    A reconstruction of modified gravity is proposed by establishing a correspondence between the effective density of the modified gravity and the holographic density. The nonhomogeneous term in the modified Friedmann equation, generated by the vacuum (holographic) energy density, lead to reconstructed models that contain explicitly, as part of the solution, the Einstein–Hilbert (EH) term. It was shown that the ΛCDM-type cosmic histories allow the general relativity Lagrangian with cosmological constant as a particular reconstructed solution. The Starobinsky term appears in some reconstructed solutions, and an approximate reconstruction of the Chaplygin gas cosmology was performed in terms of elementary functions of curvature.

    PACS: 98.80.−k, 95.36.+x, 04.50.Kd
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