Constraints on models with a break in the primordial power spectrum
文献类型：期刊论文
| 作者 | Li, Hong; Xia, Jun-Qing; Brandenberger, Robert; Zhang, Xinmin; Li, H , Chinese Acad Sci, Inst High Energy Phys, POB 918-4, Beijing 100049, Peoples R China |
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2010 |
| 卷号 | 690期号:5页码:451-455 |
| 关键词 | Inflationary Universe Alpha Forest Black-holes Singularity Flatness Horizon |
| ISSN号 | 0370-2693 |
| 英文摘要 | One of the characteristics of the "Matter Bounce" scenario, an alternative to cosmological inflation for producing a scale-invariant spectrum of primordial adiabatic fluctuations on large scales, is a break in the power spectrum at a characteristic scale, below which the spectral index changes from n(s) = 1 to n(s) = 3. We study the constraints which current cosmological data place on the location of such a break, and more generally on the position of the break and the slope at length scales smaller than the break. The observational data we use include the WMAP five-year data set (WMAP5), other CMB data from BOOMERanG, CBI, VSA, and ACBAR, large-scale structure data from the Sloan Digital Sky Survey (SDSS, their luminous red galaxies sample), Type la Supernovae data (the "Union" compilation), and the Sloan Digital Sky Survey Lyman-alpha forest power spectrum (Ly alpha) data. We employ the Markov Chain Monte Carlo method to constrain the features in the primordial power spectrum which are motivated by the matter bounce model. We give an upper limit on the length scale where the break in the spectrum occurs. (C) 2010 Elsevier B.V. All rights reserved. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000279989100002 |
| 公开日期 | 2012-08-02 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/5081]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Li, H , Chinese Acad Sci, Inst High Energy Phys, POB 918-4, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Hong,Xia, Jun-Qing,Brandenberger, Robert,et al. Constraints on models with a break in the primordial power spectrum[J]. PHYSICS LETTERS B,2010,690(5):451-455. |
| APA | Li, Hong,Xia, Jun-Qing,Brandenberger, Robert,Zhang, Xinmin,&Li, H , Chinese Acad Sci, Inst High Energy Phys, POB 918-4, Beijing 100049, Peoples R China.(2010).Constraints on models with a break in the primordial power spectrum.PHYSICS LETTERS B,690(5),451-455. |
| MLA | Li, Hong,et al."Constraints on models with a break in the primordial power spectrum".PHYSICS LETTERS B 690.5(2010):451-455. |
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来源：理论物理研究所
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