Temperature correlations in a compact hyperbolic universe |
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Authors: | Kaiki Taro Inoue Kenji Tomita Naoshi Sugiyama |
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Institution: | Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan;Department of Physics, Kyoto University, Kyoto 606-8502, Japan |
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Abstract: | The effect of a non-trivial topology on the temperature correlations of the cosmic microwave background (CMB) in a small compact hyperbolic universe with volume comparable to the cube of the curvature radius is investigated. Because the bulk of large-angle CMB fluctuations are produced at the late epoch in low-Ω0 models, the effect of a long-wavelength cut-off owing to the periodic structure does not lead to significant suppression of large-angle power as in compact flat models. The angular power spectra are consistent with COBE data for Ω0 0.1. |
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Keywords: | cosmic microwave background large-scale structure of Universe |
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