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

Tuan Q. Do; Win-Fun Kao

doi:10.1103/PhysRevD.84.123009

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

Tuan Q. Do^*, Win-Fun Kao

^*Corresponding author for this work

Institute of Physics

Research output: Contribution to journal › Article › peer-review

47 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 language	English
Article number	123009
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	84
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevD.84.123009
State	Published - 28 Dec 2011

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AB - 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.

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

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