Asymptotic behavior of homogeneous cosmological models in the presence of a positive cosmological constant
Journal Article
·
· Phys. Rev. D; (United States)
We examine the late-time behavior of initially expanding homogeneous cosmological models satisfying Einstein's equation with a positive cosmological constant ..lambda... It is shown that such models of all Bianchi types except IX exponentially evolve toward the de Sitter solution, with time scale (3/..lambda..)/sup 1/2/. The behavior of Bianchi type-IX universes is similar, provided that ..lambda.. is sufficiently large compared with spatial-curvature terms. Thus, a positive cosmological constant provides an effective means of isotropizing homogeneous universes.
- Research Organization:
- Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637
- OSTI ID:
- 5599320
- Journal Information:
- Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 28:8; ISSN PRVDA
- Country of Publication:
- United States
- Language:
- English
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