D-term inflation

P. Binétruy, G. Dvali

    Research output: Contribution to journalArticle

    Abstract

    We show that inflation which is dominated by the D-term density avoids the 'slow-roll' problem of inflation in supergravity. Such an inflationary scenario can naturally emerge in theories with non-anomalous or anomalous U(1) gauge symmetry. In the latter case the scale of inflation is fixed by the Green-Schwarz mechanism of anomaly cancellation. The crucial point is that the (super)gravity-mediated curvature of all the scalar fields (and, in particular, of the inflaton), which in the standard F-dominated case is of the order of the Hubble parameter, is absent in the D-term inflation case. The curvature of moduli and of all other flat directions during such an inflation crucially depends on their gauge charges.

    Original languageEnglish (US)
    Pages (from-to)241-246
    Number of pages6
    JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
    Volume388
    Issue number2
    DOIs
    StatePublished - Nov 14 1996

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

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