Accelerating cosmologies from non-local higher-derivative gravity

Salvatore Capozziello, Emilio Elizalde, Shin'ichi Nojiri, Sergei D. Odintsov

    Research output: Contribution to journalArticleResearchpeer-review

    115 Citations (Scopus)

    Abstract

    We study accelerating cosmological solutions of a general class of non-linear gravities which depend on Gauss-Bonnet and other higher derivative invariants. To achieve this goal a local formulation with auxiliary scalars for arbitrary higher-derivative non-local gravity is developed. It is demonstrated that non-local Gauss-Bonnet gravity can be reduced, in the local formulation, to a model of string-inspired scalar-Gauss-Bonnet gravity. A natural unification, in the theory here developed, of the early-time inflation epoch with a late-time acceleration stage can also be realized. © 2008 Elsevier B.V. All rights reserved.
    Original languageEnglish
    Pages (from-to)193-198
    JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
    Volume671
    Issue number1
    DOIs
    Publication statusPublished - 12 Jan 2009

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