Second-Order Gauge-Invariant Cosmological Perturbation Theory: Current Status

Second-Order Gauge-Invariant Cosmological Perturbation Theory: Current Status

The current status of the recent developments of the second-order gauge-invariant cosmological perturbation theory is reviewed. To show the essence of this perturbation theory, we concentrate only on the universe filled with a single scalar field. Through this paper, we point out the problems which...

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Main Author: Kouji Nakamura
Format: Article
Language:English
Published: Hindawi Limited 2010-01-01
Series:Advances in Astronomy
Online Access:http://dx.doi.org/10.1155/2010/576273
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spelling doaj-77402aa015094a07b6abcdbd96bc05032020-11-24T21:03:15ZengHindawi LimitedAdvances in Astronomy1687-79691687-79772010-01-01201010.1155/2010/576273576273Second-Order Gauge-Invariant Cosmological Perturbation Theory: Current StatusKouji Nakamura0Optical and Infrared Astronomy Division, National Astronomical Observatory of Japan, Osawa, Mitaka, Tokyo 181-8588, JapanThe current status of the recent developments of the second-order gauge-invariant cosmological perturbation theory is reviewed. To show the essence of this perturbation theory, we concentrate only on the universe filled with a single scalar field. Through this paper, we point out the problems which should be clarified for the further theoretical sophistication of this perturbation theory. We also expect that this theoretical sophistication will be also useful to discuss the theoretical predictions of non-Gaussianity in CMB and comparison with observations.http://dx.doi.org/10.1155/2010/576273
collection DOAJ
language English
format Article
sources DOAJ
author Kouji Nakamura
spellingShingle Kouji Nakamura
Second-Order Gauge-Invariant Cosmological Perturbation Theory: Current Status
Advances in Astronomy
author_facet Kouji Nakamura
author_sort Kouji Nakamura
title Second-Order Gauge-Invariant Cosmological Perturbation Theory: Current Status
title_short Second-Order Gauge-Invariant Cosmological Perturbation Theory: Current Status
title_full Second-Order Gauge-Invariant Cosmological Perturbation Theory: Current Status
title_fullStr Second-Order Gauge-Invariant Cosmological Perturbation Theory: Current Status
title_full_unstemmed Second-Order Gauge-Invariant Cosmological Perturbation Theory: Current Status
title_sort second-order gauge-invariant cosmological perturbation theory: current status
publisher Hindawi Limited
series Advances in Astronomy
issn 1687-7969
1687-7977
publishDate 2010-01-01
description The current status of the recent developments of the second-order gauge-invariant cosmological perturbation theory is reviewed. To show the essence of this perturbation theory, we concentrate only on the universe filled with a single scalar field. Through this paper, we point out the problems which should be clarified for the further theoretical sophistication of this perturbation theory. We also expect that this theoretical sophistication will be also useful to discuss the theoretical predictions of non-Gaussianity in CMB and comparison with observations.
url http://dx.doi.org/10.1155/2010/576273
work_keys_str_mv AT koujinakamura secondordergaugeinvariantcosmologicalperturbationtheorycurrentstatus
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