Consistency relation for single scalar inflation

Andrei Gruzinov

    Research output: Contribution to journalArticlepeer-review


    Single scalar field inflation with a generic, nonquadratic in derivatives, field Lagrangian is considered. It is shown that non-Gaussianity of curvature perturbations is characterized by two dimensionless amplitudes. One of these amplitudes can be expressed in terms of the usual inflationary observables-the scalar power, the tensor power, and the tensor index. This consistency relation provides an observational test for the single scalar inflation.

    Original languageEnglish (US)
    Article number027301
    Pages (from-to)027301-1-027301-2
    JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
    Issue number2
    StatePublished - Jan 2005

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics
    • Physics and Astronomy (miscellaneous)


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