Transformations of Robertson-Walker spacetimes preserving separation zero (Q793371)
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scientific article; zbMATH DE number 3855944
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Transformations of Robertson-Walker spacetimes preserving separation zero |
scientific article; zbMATH DE number 3855944 |
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Transformations of Robertson-Walker spacetimes preserving separation zero (English)
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1982
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\textit{A. D. Alexandrov} [Can. J. Math. 19, 1119-1128 (1967; Zbl 0173.246)] proved that bijections of Minkowski space-time which preserve in both directions pairs of events connected by unreflected light signals are essentially Lorentz transformations. In this paper the author classifies the corresponding transformations for Robertson-Walker space- times in each of the cases \(c>0\), \(c=0\) and \(c<0 (c=curvature)\).
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light signals
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Lorentz transformations
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Robertson-Walker space-times
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