PERTURBATION THEORY OF THE COSMOLOGICAL LOG-DENSITY FIELD
文献类型：期刊论文
| 作者 | Wang, Xin1,2,3; Neyrinck, Mark2; Szapudi, Istvan4; Szalay, Alex2; Chen, Xuelei1,5 ; Lesgourgues, Julien6,7; Riotto, Antonio6,8; Sloth, Martin6
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2011-07-01 |
| 卷号 | 735期号:1 |
| 关键词 | cosmology: theory large-scale structure of universe |
| 英文摘要 | The matter density field exhibits a nearly lognormal probability density distribution after entering into the nonlinear regime. Recently, it has been shown that the shape of the power spectrum of a logarithmically transformed density field is very close to the linear density power spectrum, motivating an analytic study of it. In this paper, we develop cosmological perturbation theory for the power spectrum of this field. Our formalism is developed in the context of renormalized perturbation theory, which helps to regulate the convergence behavior of the perturbation series, and of the Taylor series expansion we use for the logarithmic mapping. This approach allows us to handle the critical issue of density smoothing in a straightforward way. We also compare our perturbative results with simulation measurements. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000291788300032 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8051]  |
| 专题 | 国家天文台_星系宇宙学研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China 2.Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA 3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 4.Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA 5.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China 6.CERN, PII TII Div, CH-1211 Geneva 23, Switzerland 7.Ecole Polytech Fed Lausanne, ITP, CH-1015 Lausanne, Switzerland 8.Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy |
| 推荐引用方式 GB/T 7714 | Wang, Xin,Neyrinck, Mark,Szapudi, Istvan,et al. PERTURBATION THEORY OF THE COSMOLOGICAL LOG-DENSITY FIELD[J]. ASTROPHYSICAL JOURNAL,2011,735(1). |
| APA | Wang, Xin.,Neyrinck, Mark.,Szapudi, Istvan.,Szalay, Alex.,Chen, Xuelei.,...&Sloth, Martin.(2011).PERTURBATION THEORY OF THE COSMOLOGICAL LOG-DENSITY FIELD.ASTROPHYSICAL JOURNAL,735(1). |
| MLA | Wang, Xin,et al."PERTURBATION THEORY OF THE COSMOLOGICAL LOG-DENSITY FIELD".ASTROPHYSICAL JOURNAL 735.1(2011). |
入库方式： OAI收割
来源：国家天文台
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