Behavior of chaotic inflation in anisotropic cosmologies with nonminimal coupling

Details Behavior of chaotic inflation in anisotropic cosmologies with nonminimal coupling Behavior of chaotic inflation in anisotropic cosmologies with nonminimal coupling

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989phrvd..39..405f&link_type=abstract

Physical Review D (Particles and Fields), Volume 39, Issue 2, 15 January 1989, pp.405-411

Astronomy and Astrophysics

Astrophysics

48

Origin And Formation Of The Universe, Particle-Theory And Field-Theory Models Of The Early Universe

Scientific paper

We review the behavior of the chaotic inflationary scenario in the minimally coupled anisotropic case and in the nonminimally coupled isotropic case. In the former, anisotropy enhances inflation. In the latter, positive nonminimal coupling introduces a singularity at a critical point φ^c in the scalar field. The exact value of φ^c depends on the coupling parameter ξ. This singularity cannot be exceeded, which precludes astrophysically sufficient inflation for ξ>~10-2. We extend the analysis to anisotropic Bianchi models where a second singularity φc appears, which further prevents inflation in these models for ξ>~10-2.

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