Self-similar spherically symmetric cosmological models with two scalar fields (Q2771191)
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scientific article; zbMATH DE number 1705286
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Self-similar spherically symmetric cosmological models with two scalar fields |
scientific article; zbMATH DE number 1705286 |
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Self-similar spherically symmetric cosmological models with two scalar fields (English)
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7 October 2002
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inflationary cosmology
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self-similar space-time
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scalar field
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0.9502629
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0.9296701
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0.9251355
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0.90810037
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0.90181917
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0.8978647
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0.89329964
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The authors discuss cosmological models with two scalar fields as source. They restrict to those space-times which are self-similar. A space-time is called self-similar, if a non-identical homothetic map can be compensated by an isometry. NEWLINENEWLINENEWLINEThe present paper is mainly on qualitative properties of the corresponding solutions and their stability. It turns out, that scalar fields with an exponential potential allow, as expected, quite often a self-similar solution of the Einstein field equation. NEWLINENEWLINENEWLINEThose models, which are interesting for inflationary cosmology, are also integrated numerically.
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