Geometry of the de-Sitter universe
- Eric A. Lord
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By making use of the fact that the de-Sitter metric corresponds to a hyperquadric in a five-dimensional flat space, it is shown that the three Robertson-Walker metrics for empty spacetime and positive cosmological constant, corresponding to 3-space of positive, negative and zero curvative, are geometrically equivalent. The 3-spaces correspond to intersections of the hyperquadric by hyperplanes, and the time-like geodesics perpendicular to them correspond to intersections by planes, in all three cases.
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- Geometry of the de-Sitter universe
International Journal of Theoretical Physics
Volume 9, Issue 2 , pp 117-127
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- Kluwer Academic Publishers-Plenum Publishers
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- Eric A. Lord (1)
- Author Affiliations
- 1. Department of Applied Mathematics, Indian Institute of Science, Bangalore-12, India