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Signature of primordial non-Gaussianity on the matter power spectrum
http://hdl.handle.net/2237/11326
49b6cb7b-d4fa-4619-8d23-23784dc7f779
名前 / ファイル | ライセンス | アクション | |
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2009-03-16 | |||||
タイトル | ||||||
タイトル | Signature of primordial non-Gaussianity on the matter power spectrum | |||||
著者 |
Taruya, Atsushi
× Taruya, Atsushi× Koyama, Kazuya× Matsubara, Takahiko |
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権利 | ||||||
権利情報 | American Physical Society, All rights reserved. | |||||
抄録 | ||||||
内容記述 | Employing the perturbative treatment of gravitational clustering, we discuss possible effects of primordial non-Gaussianity on the matter power spectrum. As gravitational clustering develops, the coupling between different Fourier modes of density perturbations becomes important and the primordial non-Gaussianity which intrinsically possesses a nontrivial mode correlation can affect the late-time evolution of the power spectrum. We quantitatively estimate the non-Gaussian effect on the power spectrum from the perturbation theory. The potential impact on the cosmological parameter estimation using the power spectrum are investigated based on the Fisher-matrix formalism. In addition, on the basis of the local biasing prescription, non-Gaussian effects on the galaxy power spectrum are considered, showing that the scale-dependent biasing arises from a local-type primordial non-Gaussianity. On the other hand, an equilateral-type non-Gaussianity does not induce such scale dependence because of weaker mode correlations between small and large Fourier modes. | |||||
内容記述タイプ | Abstract | |||||
出版者 | ||||||
出版者 | American Physical Society | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプresource | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
DOI | ||||||
関連識別子 | ||||||
識別子タイプ | DOI | |||||
関連識別子 | http://dx.doi.org/10.1103/PhysRevD.78.123534 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1550-7998 | |||||
書誌情報 |
PHYSICAL REVIEW D 巻 78, 号 12, p. 123534-123534, 発行日 2008-12 |
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フォーマット | ||||||
application/pdf | ||||||
著者版フラグ | ||||||
値 | publisher | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/11326 | |||||
識別子タイプ | HDL |