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

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

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011phrvd..84l3009d&link_type=abstract

Physical Review D, vol. 84, Issue 12, id. 123009

Physics

2

Relativity And Gravitation, Modified Theories Of Gravity, Origin And Formation Of The Universe, Mathematical And Relativistic Aspects Of Cosmology

Scientific paper

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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