Constraints on models with a break in the primordial power spectrum
文献类型：期刊论文
| 作者 | Li H(李虹) ; Li, H; Xia, JQ; Brandenberger, R; Zhang, XM; Zhang XM(张新民)
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| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2010 |
| 卷号 | 690期号:5页码:451-455 |
| 关键词 | Bounce cosmology Astronomical observational data |
| 通讯作者 | [Li, Hong ; Brandenberger, Robert ; Zhang, Xinmin] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China ; [Li, Hong ; Brandenberger, Robert ; Zhang, Xinmin] Chinese Acad Sci, TPCSF, Beijing 100864, Peoples R China ; [Li, Hong ; Brandenberger, Robert] Chinese Acad Sci, Kavli Inst Theoret Phys, Beijing 100190, Peoples R China ; [Xia, Jun-Qing] Scuola Int Super Studi Avanzati, I-34136 Trieste, Italy ; [Brandenberger, Robert] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada |
| 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 |
| 类目[WOS] | Physics, Multidisciplinary |
| 研究领域[WOS] | Physics |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000279989100002 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/237538]  |
| 专题 | 高能物理研究所_理论物理室 高能物理研究所_粒子天体物理中心 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Li H,Li, H,Xia, JQ,et al. Constraints on models with a break in the primordial power spectrum[J]. PHYSICS LETTERS B,2010,690(5):451-455. |
| APA | 李虹,Li, H,Xia, JQ,Brandenberger, R,Zhang, XM,&张新民.(2010).Constraints on models with a break in the primordial power spectrum.PHYSICS LETTERS B,690(5),451-455. |
| MLA | 李虹,et al."Constraints on models with a break in the primordial power spectrum".PHYSICS LETTERS B 690.5(2010):451-455. |
入库方式： OAI收割
来源：高能物理研究所
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