Anisotropic power-law inflation for a two scalar fields model

Tuan Q. Do*, W. F. Kao, Ing Chen Lin

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    56 Scopus citations


    A special class of Bianchi type I expanding solutions in a string motivated theory with a single scalar field has been speculated to break the cosmic no-hair theorem that will not approach the late time isotropic expanding solution. We will show by a new perturbation approach that an unstable mode for the inflationary solutions exists when an additional phantom field is introduced. The result indicates that the existence of an unstable mode is closely related to the extra fields that could be present during the very early Universe.

    Original languageEnglish
    Article number123002
    JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
    Issue number12
    StatePublished - 7 Jun 2011


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