The power spectrum for a multi-component inflaton to second-order corrections in the slow-roll expansion

Jin Ook Gong; Ewan D. Stewart

doi:10.1016/S0370-2693(02)02004-X

The power spectrum for a multi-component inflaton to second-order corrections in the slow-roll expansion

Jin Ook Gong, Ewan D. Stewart

Department of Science Education

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61 Scopus citations

Abstract

We derive the power spectrum Ρ(k) of the density perturbations produced during inflation up to second-order corrections in the standard slow-roll approximation for an inflaton with more than one degree of freedom. We also present the spectral index n up to first-order corrections including previously missing terms, and the running dn/d lnk to leading order.

Original language	English
Pages (from-to)	213-222
Number of pages	10
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	538
Issue number	3-4
DOIs	https://doi.org/10.1016/S0370-2693(02)02004-X
State	Published - 4 Jul 2002

Bibliographical note

Funding Information:
We thank Hyun-Chul Lee for valuable discussions and helpful comments. This work was supported in part by Brain Korea 21 and KRF grant 2000-015-DP0080.

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abstract = "We derive the power spectrum Ρ(k) of the density perturbations produced during inflation up to second-order corrections in the standard slow-roll approximation for an inflaton with more than one degree of freedom. We also present the spectral index n up to first-order corrections including previously missing terms, and the running dn/d lnk to leading order.",

author = "Gong, {Jin Ook} and Stewart, {Ewan D.}",

note = "Funding Information: We thank Hyun-Chul Lee for valuable discussions and helpful comments. This work was supported in part by Brain Korea 21 and KRF grant 2000-015-DP0080.",

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AU - Stewart, Ewan D.

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Y1 - 2002/7/4

N2 - We derive the power spectrum Ρ(k) of the density perturbations produced during inflation up to second-order corrections in the standard slow-roll approximation for an inflaton with more than one degree of freedom. We also present the spectral index n up to first-order corrections including previously missing terms, and the running dn/d lnk to leading order.

AB - We derive the power spectrum Ρ(k) of the density perturbations produced during inflation up to second-order corrections in the standard slow-roll approximation for an inflaton with more than one degree of freedom. We also present the spectral index n up to first-order corrections including previously missing terms, and the running dn/d lnk to leading order.

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JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

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IS - 3-4

ER -

The power spectrum for a multi-component inflaton to second-order corrections in the slow-roll expansion

Abstract

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