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arXiv 1104.0625astro-ph.COgr-qchep-th
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用dS/QFT对应在de Sitter边界上的宇宙学

Cosmology at the boundary of de Sitter using the dS/QFT correspondence

Mafalda Dias

备注：
10 pages, 7 figures, minor changes to match published version
发表信息：
Phys.Rev.D84:023512,2011
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摘要：

在暴胀的背景下使用dS/QFT对应允许研究有趣的，否则无法访问的物理学。特别是，通过在德西特空间边界上的对偶场论研究暴胀，有可能在早期研究强耦合引力的状态。本工作的目的是用对偶场论的自由参数完整地表示宇宙学观测量，并将它们与CMB数据进行比较。这样，对观测参数的约束通过对场论的参数施加限制，限制了强耦合暴胀图景的有效性。与数据的拟合定义了所采取的方法的一致性和有效性的限制，并表明，在此限制内，该模型几乎是不受约束的，但相当具有预测性，产生密度扰动的功率谱非常接近尺度不变性。

英文摘要：

Using the dS/QFT correspondence in the context of inflation allows for the study of interesting, otherwise inaccessible physics. In particular, by studying inflation via its dual field theory at the boundary of the de Sitter space, it may be possible to study a regime of strongly coupled gravity at early times. The purpose of this work is to completely express cosmological observables in terms of the free parameters of a dual field theory and to compare them with CMB data. In this way, constraints on the observational parameters constrains the validity of the strongly coupled inflation picture by imposing limits on the parameters of the field theory. The fit with data defines a limit for the consistency and validity of the approach taken and shows that, within this limit, the model is almost unconstrained, but quite predictive, producing power spectra of density perturbations extremely near scale invariance.

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