Evolution of Gauge-Invariant Cosmological Density Perturbations through Decoupling Era : Astrophysics and Relativity
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概要
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We carefully investigate the evolution of cosmological density perturbations through decoupling era in the baryon-photon universe by a gauge-invariant method. It is found that previous results on the same problem obtained by working in the synchronous gauge are inaccurate particularly on comoving scales greater than the horizon scales at equal time. Further, the anisotropy of microwave background radiation is estimated and the results is found to be in good agreement with previous works qualitatively but in disagreement by factors of a few. Also, an attempt is made to clarify physical processes which determine the evolution of both baryon and radiation density perturbations during decoupling era and the physical interpretation is discussed.
- 理論物理学刊行会の論文
- 1986-11-25
著者
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Sasaki Misao
Research Institute For Fundamental Physics Kyoto University
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GOUDA Naoteru
Department of Earth and Space Science, Graduate School of Science Osaka University
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Gouda Naoteru
Department Of Physics Kyoto University
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Gouda Naoteru
Department Of Earth And Space Science Faculty Of Science Osaka University
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SASAKI Misao
Department of Earth and Space Science, Graduate School of Science Osaka University
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SASAKI Misao
Research Institute for Fundamental Physics, Kyoto University
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SASAKI Misao
Research Institute for Theoretical Physics Hiroshima University
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