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arXiv 1312.7619astro-ph.COgr-qchep-th
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Planck 2013之后的通货膨胀范式

Inflationary paradigm after Planck 2013

Alan H. Guth, David I. Kaiser, Yasunori Nomura

备注：
11 pages, no figures; added references, and brief additions to Footnote 1, Section VI, and the Acknowledgments
发表信息：
Phys. Lett. B 733 (2014): 112-119
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摘要：

宇宙暴胀模型是宇宙加速膨胀的早期阶段，由弯曲时空中一个或多个标量场的动力学驱动。虽然关于场和耦合的详细假设在不同的模型中有所不同，但暴胀对几个可观测的量做出了具体的定量预测，例如平坦度参数（$Ω_k = 1 - Ω$）和原始曲率扰动的光谱倾斜（$n_s - 1 = d \ln {\cal P}_{\cal R} / d \ln k$）等--这些预测与{ \it Planck}卫星的最新观测结果非常精确。根据{ \it Planck}的数据以及永恒暴胀和多元宇宙研究的最新理论发展，我们讨论了Ijjas，Steinhardt和Loeb最近对暴胀的批评。我们认为，他们的结论建立在几个有问题的假设之上，我们得出结论，宇宙暴胀比以往任何时候都有更强的基础。

英文摘要：

Models of cosmic inflation posit an early phase of accelerated expansion of the universe, driven by the dynamics of one or more scalar fields in curved spacetime. Though detailed assumptions about fields and couplings vary across models, inflation makes specific, quantitative predictions for several observable quantities, such as the flatness parameter ($Ω_k = 1 - Ω$) and the spectral tilt of primordial curvature perturbations ($n_s - 1 = d \ln {\cal P}_{\cal R} / d \ln k$), among others---predictions that match the latest observations from the {\it Planck} satellite to very good precision. In the light of data from {\it Planck} as well as recent theoretical developments in the study of eternal inflation and the multiverse, we address recent criticisms of inflation by Ijjas, Steinhardt, and Loeb. We argue that their conclusions rest on several problematic assumptions, and we conclude that cosmic inflation is on a stronger footing than ever before.

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