A note on causality constraining higher curvature corrections to gravity

A. Gruzinov, M. Kleban

    Research output: Contribution to journalArticle

    Abstract

    We show that causality constrains the sign of quartic Riemann corrections to the Einstein-Hilbert action. Our constraint constitutes a restriction on candidate theories of quantum gravity.

    Original languageEnglish (US)
    Article numberN02
    Pages (from-to)3521-3524
    Number of pages4
    JournalClassical and Quantum Gravity
    Volume24
    Issue number13
    DOIs
    StatePublished - Jul 7 2007

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

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