The density perturbation power spectrum to second-order corrections in the slow-roll expansion

Ewan D. Stewart, Jin Ook Gong

Research output: Contribution to journalArticlepeer-review

143 Scopus citations

Abstract

We set up a formalism that can be used to calculate the power spectrum of the curvature perturbations produced during inflation up to arbitrary order in the slow-roll expansion, and explicitly calculate the power spectrum and spectral index up to second-order corrections.

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume510
Issue number1-4
DOIs
StatePublished - 21 Jun 2001

Bibliographical note

Funding Information:
We thank Jai-chan Hwang for encouraging us to complete and publish this work, and Jai-chan Hwang, Kiwoon Choi and Pyungwon Ko for helpful comments. This work was supported in part by Brain Korea 21 and KRF grant 2000-015-DP0080.

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