Adiabatic and Isocurvature Perturbations from Inflation: Power Spectra and Consistency Relations

Details Adiabatic and Isocurvature Perturbations from Inflation: Power Spectra and Consistency Relations Adiabatic and Isocurvature Perturbations from Inflation: Power Spectra and Consistency Relations

2001-07-26

arxiv.org/abs/astro-ph/0107502v1

Phys.Rev. D64 (2001) 123504

Astronomy and Astrophysics

Astrophysics

25 pages, LaTeX file

Scientific paper

10.1103/PhysRevD.64.123504

We study adiabatic and isocurvature perturbations produced during a period of cosmological inflation. We compute the power spectra and cross spectra of the curvature and isocurvature modes, as well as the tensor perturbation spectrum in terms of the slow-roll parameters. We provide two consistency relations for the amplitudes and spectral indices of the corresponding power spectra. These relations represent a definite prediction and a test of inflationary models which should be adopted when studying cosmological perturbations through the Cosmic Microwave Background in forthcoming satellite experiments.

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