COBE constraints on inflation models with a massive non-minimal scalar field

Details COBE constraints on inflation models with a massive non-minimal scalar field COBE constraints on inflation models with a massive non-minimal scalar field

1999-08-31

arxiv.org/abs/astro-ph/9908340v1

Phys.Rev.D60:123001,1999

Astronomy and Astrophysics

Astrophysics

4 pages, no figure, To appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.60.123001

We derive power spectra of the scalar- and tensor-type structures generated in an inflation model based on a massive non-minimally coupled scalar field with the strong coupling assumption. We make analyses in both the original-frame and the conformally transformed Einstein-frame. We derive contributions of both structures to the anisotropy of the cosmic microwave background radiation, and compare the contributions with the four-year COBE-DMR data. Previous study showed that sufficient amount of inflation requires a small coupling parameter. In such a case the spectra become near Zeldovich spectra, and the gravitational wave contribution becomes negligible compared with the scalar-type contribution which is testable in future CMBR experiments.

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