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General behaviour of Bianchi VI\(_ 0\) solutions with an exponential-potential scalar field. (English) Zbl 1047.83504

Summary: The solutions to the Einstein-Klein-Gordon equations without a cosmological constant are investigated for an exponential potential in a Bianchi \(\text{VI}_0\) metric. There exists a two-parameter family of solutions which have a power-law inflationary behaviour when the exponent of the potential, \(k\), satisfies \(k^2<2\). In addition, there exists a two-parameter family of singular solutions for all \(k^2\) values. A simple anisotropic exact solution is found to be stable when \(2<k^2\).

MSC:

83C15 Exact solutions to problems in general relativity and gravitational theory
83C10 Equations of motion in general relativity and gravitational theory

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