Asymptotic behavior of homogeneous cosmological models in the presence of a positive cosmological constant

Journal Article · Sat Oct 15 00:00:00 EDT 1983 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.28.2118· OSTI ID:5599320

Wald, R M

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), Vol. 28:8
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMOLOGICAL MODELS
ASYMPTOTIC SOLUTIONS
BLACK HOLES
EINSTEIN FIELD EQUATIONS
METRICS
QUANTUM FIELD THEORY
UNIVERSE
EQUATIONS
FIELD EQUATIONS
FIELD THEORIES
MATHEMATICAL MODELS
640106* - Astrophysics & Cosmology- Cosmology