Finite foliations of open universes and point-like big bang

Details Finite foliations of open universes and point-like big bang Finite foliations of open universes and point-like big bang

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aps..tsf.a2002r&link_type=abstract

American Physical Society, Joint Fall Meetings of the Texas Sections of the APS, and AAPT, Zone 13 of the SPS, and the National

Physics

Scientific paper

Every open FRW universe can be completely foliated by spacelike slices of finite volume, each intersecting every fundamental worldline. The volumes tend to zero in the past, suggesting a point-like big bang. Embedding diagrams confirm this.The situation is analogous to what happens in Milne's "toy" universe, which, however, can only be filled with point particles. How, in the general case, finite slices can contain an infinite amount of matter is explained by time-reversed gravitational collapse.

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