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The Inflationary Perturbation Spectrum

Salman Habib·Katrin Heitmann·Gerard Jungman·Carmen Molina-Paris
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Abstract

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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Salman Habib, Katrin Heitmann, Gerard Jungman, Carmen Molina-Paris. 2002-08-23. The Inflationary Perturbation Spectrum. https://doi.org/10.1103/physrevlett.89.281301

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