Physics
Scientific paper
Oct 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986hstg.rept.....a&link_type=abstract
Unknown
Physics
Cosmology, Relativity, Space-Time Functions, Theorems, Gravitation, Integrals, Models, Tensors, Rotation, Vortices
Scientific paper
A general theorem concerning any Goedel-type solution of higher-derivative gravity field equations, which may be produced by any reasonable physical source with a constant energy-momentum tensor, is analysed. The resulting class of metrics depends on two parameters, one of which is related to the vorticity. A general class of solutions of Goedel-type space-time-homogeneous universes in the context of the higher-derivative theory is exhibited. This is the most general higher-derivative solution of such type of metric and includes all known solutions of Einstein's equations related to these geometries as a special case. A number of completely causal rotating models is also obtained. Some of them present the interesting feature of having no analogous in the framework of general relativity.
Accioly A. J.
Goncalves A. T.
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