Anisotropic power-law inflation for the Dirac-Born-Infeld theory

Tuan Q. Do*, Win-Fun Kao

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    49 Scopus citations

    Abstract

    We find a new set of the Bianchi type I power-law expanding solutions in a string-motivated Dirac-Born-Infeld theory. Stability analysis shows that these power-law inflationary solutions remain stable with or without the contribution of the Dirac-Born-Infeld effect. We also find a new set of Bianchi type I expanding power-law solutions in a two scalar Dirac-Born-Infeld model with an additional phantom field. It is shown that the inclusion of the phantom field turns the Bianchi type I power-law solutions unstable during the inflationary phase.

    Original languageEnglish
    Article number123009
    JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
    Volume84
    Issue number12
    DOIs
    StatePublished - 28 Dec 2011

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