Accurately determining inflationary perturbations

Preprint

8 January 1997

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.astro-ph/9701031

Abstract

Cosmic microwave anisotropy satellites promise extremely accurate measures of the amplitude of perturbations in the universe. We use a numerical code to test the accuracy of existing approximate expressions for the amplitude of perturbations produced by single-field inflation models. We find that the second-order Stewart-Lyth calculation gives extremely accurate results, typically better than one percent. We use our code to carry out an expansion about the general power-law inflation solution, providing a fitting function giving results of even higher accuracy.

Keywords

INFLATIONARY PERTURBATIONS
DETERMINING INFLATIONARY
ANISOTROPY SATELLITES
MICROWAVE ANISOTROPY
SATELLITES PROMISE
EXTREMELY ACCURATE
GENERAL POWER
PERTURBATIONS

All Related Versions

Version 1, 1997-01-08, ArXiv

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