Abstract
We examine the late-time behavior of intially expanding homogeneous cosmological models satisfying Einstein's equation with a positive cosmological constant . It is shown that such models of all Bianchi types except IX exponentially evolve toward the de Sitter solution, with time scale . The behavior of Bianchi type-IX universes is similar, provided that is sufficiently large compared with spatial-curvature terms. Thus, a positive cosmological constant provides an effective means of isotropizing homogeneous universes.
- Received 5 July 1983
DOI:https://doi.org/10.1103/PhysRevD.28.2118
©1983 American Physical Society