New Restrictions on Spatial Topology of the Universe from Microwave Background Temperature Fluctuations

1993/05/23 by A. A. Starobinsky
Physics and Astronomy · #gr-qc #astro-ph

paper · pdf

published as JETP Lett. 57 (1993) 622-625 · 4 pages, report LANDAU-93-04/GR-1

arxiv created 1993/05/23 · arxiv updated 2009/11/30

Abstract

If the Universe has the topology of a 3-torus (T³), then it follows from recent data on large-scale temperature fluctuations ΔT/T of the cosmic microwave background that either the minimal size of the torus is at least of the order of the present cosmological horizon, or the large-scale ΔT/T pattern should have a symmetry plane (in case of the effective T¹ topology) or a symmetry axis (in case of the effective T² topology), the latter possibility being probably excluded by the data.

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