Cosmic spinning string and causal protecting capsules

A method by which a geometry with causality violation can be taken as a part of a globally causal space-time model is presented. This procedure is applied to a pair of extensions to Godel s space-time: a “Godel-generalized” and a stringlike solution. The latter is shown to be an intermediate region between Godel and deformed Minkowski geometries. Some conclusions and general ideas concerning structures with closed timelike curves are also presented.

Authors: M. Novello and M. C. Motta da Silva.

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