The effective early universe in the presence of extra dimensions

Aharon Davidson, J. Sonnenschein, A. H. Vozmediano

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

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{variant}.

Original languageEnglish
Pages (from-to)183-186
Number of pages4
JournalPhysics Letters B
Volume168
Issue number3
DOIs
StatePublished - 6 Mar 1986

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