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

被引：22
|
作者：
Nakamura, Kouji [1 ]
机构：
[1] Natl Inst Nat Sci, Natl Astron Observ Japan, Div Opt & Infrared Astron, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan
来源：
ADVANCES IN ASTRONOMY | 2010年 / 2010卷
关键词：
NON-GAUSSIANITY; GRAVITATIONAL-WAVES; SPACETIME PERTURBATIONS; TRANSFORMATIONS; DYNAMICS; UNIVERSE;
D O I：
10.1155/2010/576273
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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.
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页数：26
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