Light propagation in a universe with spatial inhomogeneities

Details Light propagation in a universe with spatial inhomogeneities Light propagation in a universe with spatial inhomogeneities

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005ap%26ss.298..409l&link_type=abstract

Astrophysics and Space Science, Volume 298, Issue 3, pp.409-418

Astronomy and Astrophysics

Astrophysics

1

Light Propagation, Universe, Space Curvature, Random Media

Scientific paper

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.

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