New restrictions on spatial topology of the universe from microwave background temperature fluctuations.
Abstract
If the universe has the topology of a 3torus (T^{3}), then it follows from recent data on the largescale temperature fluctuations, ΔT/T, of the cosmic microwave background that either the minimal size of the torus is at least on the order of the present cosmological horizon or the largescale ΔT/T pattern should have a symmetry plane (in the case of the effective T^{1} topology), or a symmetry axis (in the case of the effective T^{2} topology). The latter possibility can probably be ruled out by the data.
 Publication:

Soviet Journal of Experimental and Theoretical Physics Letters
 Pub Date:
 May 1993
 arXiv:
 arXiv:grqc/9305019
 Bibcode:
 1993JETPL..57..622S
 Keywords:

 General Relativity and Quantum Cosmology;
 Astrophysics
 EPrint:
 4 pages, report LANDAU9304/GR1