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순수물리이론 연구단
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Higher derivatives and power spectrum in effective single field inflation

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Title
Higher derivatives and power spectrum in effective single field inflation
Author(s)
Jinn-Ouk Gong; Min-Seok Seo; Spyros Sypsas
Publication Date
2015-03
Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, v.2015, no.3, pp.009 -
Publisher
IOP PUBLISHING LTD
Abstract
We study next-to-leading corrections to the effective action of the curvature pertur- bation obtained by integrating out the coupled heavy isocurvature perturbation. These corrections result from including higher order derivative operators, weighted by the mass scale of the heavy physics, in the effective theory expansion. We find that the correc- tion terms are suppressed by the ratio of the Hubble parameter to the heavy mass scale. The corresponding corrections to the power spectrum of the curvature perturbation are presented for a simple illustrative example.
URI
https://pr.ibs.re.kr/handle/8788114/1689
ISSN
1475-7516
Appears in Collections:
Center for Fundamental Theory(순수물리이론 연구단) > Journal Papers (저널논문)
Files in This Item:
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