Comments on the constraints on the topology of compact low-density universes

Details Comments on the constraints on the topology of compact low-density universes Comments on the constraints on the topology of compact low-density universes

Jun 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999ctp98proce..12i&link_type=abstract

Cosmological Topology in Paris 1998, 14 December 1998, Observatoire de Paris, Eds.: V. Blanloeil, B.F. Roukema, meeting abstract

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Scientific paper

Although it has been argued that ``small universes'' being multiply connected on scales smaller than the particle horizon are ruled out, it is found that constraints on compact multiply connected models with low matter-density (flat or hyperbolic) are not stringent. Furthermore, compact hyperbolic models (Ω0=0.1 ~ 0.2) with volume comparable to the cube of the present curvature radius are much favored compared to the infinite counterparts due to the mild suppression on large-angle power.

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