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Prog. Theor. Phys. Vol. 76 No. 5 (1986) pp. 1016-1035

[ Full Text PDF : FREE ACCESS (999K) ]

Evolution of Gauge-Invariant Cosmological Density Perturbations through Decoupling Era

Naoteru Gouda and Misao Sasaki*

Department of Physics, Kyoto University, Kyoto 606
*Research Institute for Theoretical Physics, Hirosima University, Takehara, Hiroshima 725

(Received June 6, 1986)

Abstract:

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 scale at equal time. Further, the anisotropy of microwave background radiation is estimated and the result 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.


URL : http://ptp.ipap.jp/link?PTP/76/1016/
DOI : 10.1143/PTP.76.1016

[ Full Text PDF : FREE ACCESS (999K) ] Citation:

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Citing Article(s) :

  1. Progress of Theoretical Physics Vol. 79 No. 5 (1988) pp. 1110-1125 :
    Gauge-Invariant Perturbations in the Process of Isotropization of an Anisotropic Universe
    Mitsue Den
  2. Progress of Theoretical Physics Vol. 81 No. 5 (1989) pp. 1021-1036 :
    Gauge Invariant Cosmological Perturbations with Cold Dark Matter
    Naoshi Sugiyama
  3. Progress of Theoretical Physics Vol. 85 No. 5 (1991) pp. 1023-1039 :
    Large Angle Anisotropy of the Cosmic Microwave Background in an Open Universe
    Naoteru Gouda, Naoshi Sugiyama and Misao Sasaki
  4. Progress of Theoretical Physics Vol. 88 No. 5 (1992) pp. 803-844 :
    Perturbations of the Cosmic Microwave Background Radiation and Structure Formations
    Naoshi Sugiyama and Naoteru Gouda

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