Nonrotating and nonexpanding perfect fluids |
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| Authors: | N. Van den Bergh |
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| Affiliation: | (1) Department of Applied Mathematics, University of Waterloo, N2L 3G1 Waterloo, Ontario, Canada |
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| Abstract: | It is fairly well-known that nonstationary spacetimes exist which are filled with a nonrotating and nonexpanding perfect fluid, provided the fluid does not admit an equation of state. It is less well-known that the same is true when an equation of statedoes exist. Even whenall possible invariants of a perfect fluid solution depend on a single spatial coordinate only, the corresponding solutions need not be stationary. |
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