A kinematic method to obtain conformal factors
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| Herrero Debón, Alicia; Morales Lladosa, Juan Antonio | |||
| This document is a artículoDate2000 | |||
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Este documento está disponible también en : http://hdl.handle.net/10550/68439 |
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| Radial conformal motions are considered in conformally flat space-times and their properties are used to obtain conformal factors. The geodesic case leads directly to the conformal factor of Robertson-Walker universes. General cases admitting homogeneous expansion or orthogonal hypersurfaces of constant curvature are analyzed separately. When the two conditions above are considered together a subfamily of the Stephani perfect fluid solutions, with acceleration Fermi-Walker propagated along the flow of the fluid, follows. The corresponding conformal factors are calculated and contrasted with those associated with Robertson-Walker space-times. | |||
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Herrero Debón, Alicia Morales Lladosa, Juan Antonio 2000 A kinematic method to obtain conformal factors Journal of Mathematical Physics 41 7 4765 4776 |
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| https://doi.org/10.1063/1.533376 |