Flatness of the Universe: Reconciling Theoretical Prejudices with Observational Data
- 4 June 1984
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 52 (23), 2090-2093
- https://doi.org/10.1103/physrevlett.52.2090
Abstract
Theoretical prejudices argue strongly for a flat Universe; however, observations do not support this view. We point out that this apparent conflict could be resolved if the mass density of the Universe today were dominated by (i) relativistic particles produced by the recent decay of a massive, relic particle species, or by (ii) a relic cosmological constant. Scenario (i) has several advantages in the context of galaxy formation, but must confront the problem of a young Universe.Keywords
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