Trapped surfaces in nonspherical open universes.

Details Trapped surfaces in nonspherical open universes. Trapped surfaces in nonspherical open universes.

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992acppb..23..123k&link_type=abstract

Acta Phys. Pol., B, Vol. 23, No. 2, p. 123 - 133

Physics

5

Scientific paper

The authors continue their investigation of formation of trapped surfaces in strongly curved geometries which do not contain gravitational waves. The expansion of open, flat universes does not change substantially the results obtained hitherto in the case of asymptotically and conformally flat spacetime. The necessary and sufficient conditions for the formation of trapped surfaces are given, which explicitly demonstrate that the quicker universes are expanding, the more matter is required to develop a trapped surface.

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