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Type:
Abstract
Title:
Microwave background anisotropy in low-Ù0 inflationary models and the scale of homogeneity in the Universe
Authors:
Kashlinsky, A.; Tkachev, I. I.; Frieman, J.
Affiliation:
Code 685, Goddard Space Flight Center, Greenbelt, Maryland 20771
Journal:
Physical Review Letters, Volume 73, Issue 12, September 19, 1994, pp.1582-1585 (PhRvL Homepage)
Publication Date:
09/1994
Origin:
AIP; APS
Aabstract Copyright:
(c) 1994: The American Physical Society
Bibliographic Code:
1994PhRvL..73.1582K
Doc-summary/Abstract:
We study the microwave background anisotropy due to superhorizon-size perturbations in open universes with negative spatial curvature. Using results on the low-order temperature multipole moments from the Cosmic Background Explorer satellite we find that if the homogeneity of the observable Universe arises from an early epoch of inflation, the present density parameter cannot differ from unity by more than the observed quadrupole anisotropy, ||1-Ù0||<~Q~=5×10-6, assuming preinflationary density perturbations to be of order unity. With this assumption, inflation models with low Ù0 either do not fit the microwave background observations or they do not solve the horizon problem.
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