The shape of the primordial power spectrum: A last stand before Planck data
The shape of the primordial power spectrum: A last stand before Planck data
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原始功率谱的形状:普朗克数据前的最后一搏
DOI:
10.1103/physrevd.81.021302
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发表时间:
2010
影响因子:
5
通讯作者:
Peiris H
中科院分区:
文献类型:
--
作者:
Peiris H
We present a minimally parametric reconstruction of the primordial power spectrum using the most recent cosmic microwave background and large-scale structure data sets. Our goal is to constrain the shape of the power spectrum while simultaneously avoiding strong theoretical priors and over-fitting of the data. We find no evidence for any departure from a power-law spectral index. We also find that an exact scale-invariant power spectrum is disfavored by the data, but this conclusion is weaker than the corresponding result assuming a theoretically-motivated power-law spectral index prior. The reconstruction shows that better data are crucial to justify the adoption of such a strong theoretical prior observationally. These results can be used to determine the robustness of our present knowledge when compared with forthcoming precision data from Planck.
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影响因子:
6.4
作者:
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通讯作者:
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影响因子:
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作者:
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通讯作者:
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DOI:
--
发表时间:
2009
期刊:
Physical Review D 79
影响因子:
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作者:
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DOI:
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期刊:
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作者:
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DOI:
10.1111/j.1365-2966.2006.10351.x
发表时间:
2005
影响因子:
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作者:
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通讯作者:
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