Future asymptotic behaviour of tilted Bianchi models of type IV and VIIh

@article{Hervik2005FutureAB,
  title={Future asymptotic behaviour of tilted Bianchi models of type IV and VIIh},
  author={Sigbj{\o}rn Hervik and Robert van den Hoogen and A. A. Coley},
  journal={Classical and Quantum Gravity},
  year={2005},
  volume={22},
  pages={607-633}
}
Using dynamical systems theory and a detailed numerical analysis, the late-time behaviour of tilting perfect fluid Bianchi models of types IV and VIIh is investigated. In particular, vacuum plane-wave spacetimes are studied and the important result that the only future attracting equilibrium points for non-inflationary fluids are the plane-wave solutions in Bianchi type VIIh models, is discussed. A tiny region of parameter space (the loophole) in the Bianchi type IV model is shown to contain a… 
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