The Inflationary Perturbation Spectrum

Details The Inflationary Perturbation Spectrum The Inflationary Perturbation Spectrum

2002-08-23

arxiv.org/abs/astro-ph/0208443v1

Phys.Rev.Lett. 89 (2002) 281301

Astronomy and Astrophysics

Astrophysics

4 pages, 1 figure

Scientific paper

10.1103/PhysRevLett.89.281301

Motivated by the prospect of testing inflation from precision cosmic microwave background observations, we present analytic results for scalar and tensor perturbations in single-field inflation models based on the application of uniform approximations. This technique is systematically improvable, possesses controlled error bounds, and does not rely on assuming the slow-roll parameters to be constant. We provide closed-form expressions for the power spectra and the corresponding scalar and tensor spectral indices.

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