Stability analysis of anisotropic inflationary cosmology

Chiang Mei Chen*, Win-Fun Kao

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    36 Scopus citations

    Abstract

    The stability analysis of an anisotropic inflationary universe of the four-dimensional Neveu-Schwarz-Neveu-Schwarz string model with a nonvanishing cosmological constant is discussed in this paper. The accelerating expansion solution found earlier is shown to be stable against the perturbations with respect to the dilaton and axion fields once the dilaton field falls close to the local minimum of the symmetry-breaking potential. This indicates that the Bianchi type-I space tends to evolve to an isotropic flat Friedmann-Robertson-Walker space. This expanding solution is also shown to be stable against the perturbation with respect to anisotropic spatial directions.

    Original languageEnglish
    Article number124019
    JournalPhysical Review D
    Volume64
    Issue number12
    DOIs
    StatePublished - 15 Dec 2001

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