The fissioning universe: Topological inflation and Kaluza-Klein cosmologies

Details The fissioning universe: Topological inflation and Kaluza-Klein cosmologies The fissioning universe: Topological inflation and Kaluza-Klein cosmologies

May 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986nuphb.268..489k&link_type=abstract

Nuclear Physics B, Volume 268, Issue 2, p. 489-508.

Physics

Nuclear Physics

11

Scientific paper

We propose a Kaluza-Klein cosmology by reversing the usual scenario: instead of starting with a flat 4 + N dimensional universe in which N of the dimensions curl up into a compact manifold, we start with a compact 3 + N dimensional manifold in which 3 of the dimensions are allowed to peel off and expand into the known universe.
We reverse the usual ``spontaneous compactification'' scenario and begin with a closed manifold M3+N which undergoes ``spontaneous fissioning'' into a product manifold M3 × MN. Remarkably, the 3-dimensional universe M3 can undergo a rapid de Sitter expansion large enough to solve the horizon and flatness problem. We call this ``topological inflation'', which we propose as an alternative to the usual GUT inflation. The inflationary phase automatically terminates into a big bang phase.

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