Isotropization of two-component fluids

Details Isotropization of two-component fluids Isotropization of two-component fluids

2000-04-20

arxiv.org/abs/gr-qc/0004069v2

J.Math.Phys. 41 (2000) 6906-6917

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages, 6 figures

Scientific paper

10.1063/1.1289829

We consider the problem of late-time isotropization in spatially homogeneous but anisotropic cosmological models when the source of the gravitational field consists of two non-interacting perfect fluids -- one tilted and one non-tilted. In particular, we study irrotational Bianchi type V models. By introducing appropriate dimensionless variables, a full global understanding of the state space of the gravitational field equations becomes possible. The issue of isotropization can then be addressed in a simple fashion. We also discuss implications for the cosmic ``no-hair'' theorem for Bianchi models when part of the source is a tilted fluid.

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