Four-year COBE normalization of inflationary cosmologies

Details Four-year COBE normalization of inflationary cosmologies Four-year COBE normalization of inflationary cosmologies

1996-07-05

arxiv.org/abs/astro-ph/9607038v2

Phys.Rev.D54:5917-5921,1996

Astronomy and Astrophysics

Astrophysics

5 pages LaTeX file, using RevTeX. A correction is made to the final fitting function, Eq.A5. This correction only affects mode

Scientific paper

10.1103/PhysRevD.54.R5917

We supply fitting formulae enabling the normalization of slow-roll inflation models to the four-year COBE data. We fully include the effect of the gravitational wave modes, including the predicted relation of the amplitude of these modes to that of the density perturbations. We provide the normalization of the matter power spectrum, which can be directly used for large-scale structure studies. The normalization for tilted spectra is a special case. We also provide fitting functions for the inflationary energy scale of COBE-normalized models and discuss the validity of approximating the spectra by power-laws. In an Appendix, we extend our analysis to include models with a cosmological constant, both with and without gravitational waves.

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