Towards Understanding the Inflationary Universe――Perspectives from Current and Future Cosmological Observations

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  • インフレーション宇宙の解明へ向けて――これまでと今後の宇宙観測
  • インフレーション ウチュウ ノ カイメイ エ ムケテ : コレマデ ト コンゴ ノ ウチュウ カンソク

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Abstract

<p>Current cosmological observations are so precise that now we have a lot of information on the inflationary Universe. However, we are still far from complete understanding of the actual mechanism of how the inflation is realized and primordial fluctuations are generated. In this article, first we briefly review the basics of the inflationary cosmology and summarize its current status from the viewpoint of observational results such as those from Planck satellite. Then we discuss to what extent we can understand the inflationary Universe from future observations of power spectrum and non-Gaussianity of primordial fluctuations as well as gravitational waves. Their implications on inflationary models are also discussed.</p>

Journal

  • Butsuri

    Butsuri 74 (7), 463-471, 2019-07-05

    The Physical Society of Japan

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