Non-tilted Bianchi VII_0 models - the radiation fluid

TL;DR

This paper analyzes the late-time behavior of non-tilted Bianchi VII_0 cosmological models with radiation fluid, revealing phenomena like asymptotic self-similarity breaking and Weyl-curvature dominance, highlighting the complexity of Einstein's equations.

Contribution

It completes the analysis of Bianchi VII_0 models with radiation fluid, demonstrating complex late-time dynamics and phenomena not previously detailed.

Findings

Exhibits asymptotic self-similarity breaking.

Shows Weyl-curvature dominance at late times.

Highlights complexity of Einstein's field equations.

Abstract

We consider the late time behaviour of non-tilted perfect fluid Bianchi VII_0 models when the source is a radiation fluid, thereby completing the analysis of the Bianchi VII_0 models initiated by Wainwright et al in a recent paper. The models exhibit the phenomena of asymptotic self-similarity breaking and Weyl-curvature dominance at late times. The late time dynamics of the VII_0 perfect fluid models, and in particular that of the radiation fluid, is a prime example of the complexity inherent in the field equations of general relativity.