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题名: Nearly scale-invariant power spectrum and quantum cosmological perturbations in the gravity's rainbow scenario
作者: Wang, S;  Chang, Z
刊名: EUROPEAN PHYSICAL JOURNAL C
出版日期: 2015
卷号: 75, 期号:6, 页码:259
学科分类: Physics
DOI: http://dx.doi.org/10.1140/epjc/s10052-015-3457-y
通讯作者: Wang, S (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100049, Peoples R China.
文章类型: Article
英文摘要: We propose the gravity's rainbow scenario as a possible alternative of the inflation paradigm to account for the flatness and horizon problems. We focus on studying the cosmological scalar perturbations which are seeded by the quantum fluctuations in the very early universe. The scalar power spectrum is expected to be nearly scale-invariant. We estimate the rainbow index lambda and energy scale M in the gravity's rainbow scenario by analyzing the Planck temperature and WMAP polarization datasets. The constraints on them are given by lambda = 2.933 +/- 0.012 and ln(10(5)M/M-p) = -0.401(-0.451)(+0.457) at the 68% confidence level.
类目[WOS]: Physics, Particles & Fields
关键词[WOS]: INFLATIONARY UNIVERSE ;  FLATNESS PROBLEMS ;  HORIZON
收录类别: SCI
项目资助者: Natural Science Fund of China (NSFC) [11375203] ;  Knowledge Innovation Program of Chinese Academy of Sciences ;  NSFC [11322545, 11335012]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/20970
Appears in Collections:理论物理所2015年知识产出_期刊论文

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Recommended Citation:
Wang, S,Chang, Z. Nearly scale-invariant power spectrum and quantum cosmological perturbations in the gravity's rainbow scenario[J]. EUROPEAN PHYSICAL JOURNAL C,2015,75(6):259.
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文件名: Nearly scale-invariant power spectrum and quantum cosmological perturbations in the gravity's rainbow scenario.pdf
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