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Chaotic exit to inflation: the dynamics of pre-inflationary universes

H. P. de Oliveira·I. Damiao Soares·T. J. Stuchi
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Abstract

We show that anisotropic Bianchi type-IX models, with matter and cosmological constant have chaotic dynamics, connected to the presence of a saddle-center in phase space. The topology of cylinders emanating from unstable periodic orbits about the saddle-center provides an invariant characterization of chaos in the models. The model can be thought to describe the early stages of inflation, the way out to inflation being chaotic.

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H. P. de Oliveira, I. Damiao Soares, T. J. Stuchi. 1997-11-05. Chaotic exit to inflation: the dynamics of pre-inflationary universes. https://arxiv.org/abs/gr-qc/9711014

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