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arXiv 1601.04773gr-qcastro-ph.COhep-phhep-th
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流体描述中的暴胀宇宙

Inflationary universe in fluid description

Kazuharu Bamba

摘要:

我们研究暴胀宇宙学的流体描述。结果表明,暴胀宇宙的三个观测量:曲率扰动的谱指数、密度扰动的张量标量比和谱指数的运行都可以与普朗克分析相容.此外,我们重建的状态方程(EoS)的曲率扰动的光谱指数与普朗克的结果一致的流体。我们明确地表明,宇宙可以优雅地退出通货膨胀的重建流体模型。此外,我们还研究了流体模型的奇异膨胀。

英文摘要:

We investigate a fluid description of inflationary cosmology. It is shown that the three observables of the inflationary universe: the spectral index of the curvature perturbations, the tensor-to-scalar ratio of the density perturbations, and the running of the spectral index, can be compatible with the Planck analysis. In addition, we reconstruct the equation of state (EoS) for a fluid from the spectral index of the curvature perturbations consistent with the Planck results. We explicitly demonstrate that the universe can gracefully exit from inflation in the reconstructed fluid models. Furthermore, we explore the singular inflation for a fluid model.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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