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Prog. Theor. Phys. Vol. 81 No. 5 (1989) pp. 1021-1036

[ Full Text PDF : FREE ACCESS (777K) ]

Gauge Invariant Cosmological Perturbations with Cold Dark Matter

Naoshi Sugiyama

Research Institute for Theoretical Physics, Hiroshima University, Takehara 725

(Received February 20, 1989)

Abstract:

In the gauge-invariant formalism, the evolution of adiabatic and baryonic isocurvature density perturbations in a universe dominated by cold dark matter (CDM) is throughly investigated. We evaluate anisotropies in the cosmic microwave background (CMB) and large scale peculiar velocities. From the recent observations of CMB fluctuations, we find new and stringent constraint is obtained for adiabatic CDM models as Ω0h-1 > 0.3. As for baryonic isocurvature perturbations, though the constraint is required as Ω0h-1 \gtrsim0.6, we find these baryonic isocurvature models are more viable than axion isocurvature models. However it is difficult for both adiabatic and baryonic isocurvature CDM models to explain the observed large scale velocity field at \gtrsim50 h-1 Mpc while being consistent with the observations of CMB anisotropies.


URL : http://ptp.ipap.jp/link?PTP/81/1021/
DOI : 10.1143/PTP.81.1021

[ Full Text PDF : FREE ACCESS (777K) ] Citation:

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Citing Article(s) :

  1. Progress of Theoretical Physics Vol. 82 No. 3 (1989) pp. 563-580 :
    Gravitational Lens Effect on the Cosmic Background Radiation Due to Nonlinear Inhomogeneities
    Kenji Tomita and Kazuya Watanabe
  2. Progress of Theoretical Physics Vol. 85 No. 1 (1991) pp. 57-67 :
    Gravitational Lens Effect of Wall-Like Objects and Its Cosmological Implications
    Kenji Tomita
  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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