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Light propagation in a universe with spatial inhomogeneities |
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| Authors: | |
| Institution: | (1) Moscow State University, Moscow, Russia |
| Abstract: | A light propagation in a universe which is homogeneous only in average systematically differs from a light propagation in a strictly homogeneous Universe. We demonstrate a link between this effect and the general theory of transport phenomenon in random media. The effective spatial curvature of a universe which is homogeneous only in average is introduced. This curvature is governing a light propagation in such universe. We show that the effective spatial curvature is lower than the average curvature. It implies that a universe with critical mean density looks like a space with negative curvature. |
| Keywords: | light propagation universe space curvature random media |
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