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- W1989707716 abstract "We show that a flow (timelike congruence) in any type $B_{1}$ warped product spacetime is uniquely and algorithmically determined by the condition of zero flux. (Though restricted, these spaces include many cases of interest.) The flow is written out explicitly for canonical representations of the spacetimes. With the flow determined, we explore an inverse approach to Einstein's equations where a phenomenological fluid interpretation of a spacetime follows directly from the metric irrespective of the choice of coordinates. This approach is pursued for fluids with anisotropic pressure and shear viscosity. In certain degenerate cases this interpretation is shown to be generically not unique. The framework developed allows the study of exact solutions in any frame without transformations. We provide a number of examples, in various coordinates, including spacetimes with and without unique interpretations. The results and algorithmic procedure developed are implemented as a computer algebra program called GRSource." @default.
- W1989707716 created "2016-06-24" @default.
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- W1989707716 date "2003-11-26" @default.
- W1989707716 modified "2023-09-26" @default.
- W1989707716 title "Inverse approach to Einstein’s equations for nonconducting fluids" @default.
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- W1989707716 doi "https://doi.org/10.1103/physrevd.68.104031" @default.
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