The effective early universe in the presence of extra dimensions

Details The effective early universe in the presence of extra dimensions The effective early universe in the presence of extra dimensions

Mar 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986phlb..168..183d&link_type=abstract

Physics Letters B, Volume 168, Issue 3, p. 183-186.

Physics

12

Scientific paper

The Robertson-Walker geometry in an empty five-dimensional universe is derived, and the effective four-dimensional evolution is analyzed. The radius of the compact fifth dimension is regarded as a non-static quantity. The ``fine structure'' constancy is asymptotically respected only provided the cosmological constant vanishes and the ordinary three-space is open. Characteristically, the evolution of the very early universe is governed by the Zeldovich equation of state P=ϱ.

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