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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
Constraints on models with a break in the primordial power spectrum
Source PublicationPHYSICS LETTERS B
KeywordInflationary Universe Alpha Forest Black-holes Singularity Flatness Horizon
AbstractOne 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.
2010
ISSN0370-2693
Volume690Issue:5Pages:451-455
Subject AreaPhysics
Indexed BySCI
Funding OrganizationNASA Office of Space Science; National Natural Science Foundation of China[10803001, 90303004, 10533010, 10675136]; Chinese Academy of Science[KJCX3-SYW-N2]; Institute of High Energy Physics; KITPC; NSERC; CRC ; NASA Office of Space Science; National Natural Science Foundation of China[10803001, 90303004, 10533010, 10675136]; Chinese Academy of Science[KJCX3-SYW-N2]; Institute of High Energy Physics; KITPC; NSERC; CRC ; NASA Office of Space Science; National Natural Science Foundation of China[10803001, 90303004, 10533010, 10675136]; Chinese Academy of Science[KJCX3-SYW-N2]; Institute of High Energy Physics; KITPC; NSERC; CRC ; NASA Office of Space Science; National Natural Science Foundation of China[10803001, 90303004, 10533010, 10675136]; Chinese Academy of Science[KJCX3-SYW-N2]; Institute of High Energy Physics; KITPC; NSERC; CRC
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Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/5081
CollectionSCI期刊论文
Corresponding AuthorLi, H , Chinese Acad Sci, Inst High Energy Phys, POB 918-4, Beijing 100049, Peoples R China
Recommended Citation
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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