文档介绍：arXiv:gr-qc/0410035 v1 7 Oct 2004
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le Everett Allen
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I. Introduction
There has recently been a good deal of interest in possible spacetimes
containing closed timelike curves (CTCs) arising either from the presence
of traversable wormholes [1] or from the warping of spacetime in such a
way as to allow superluminal travel[2], with the possibility of CTC’s as a
consequence[3-5]. A variety of theoretical considerations (e. g., Refs. 6-8),
either general or addressed to specific models, have been advanced which
suggest that the formation of CTC’s is not possible. However, while some of
these considerations are very persuasive, none appear conclusive[9].
In addition to the problems discussed in the references already cited,
CTC’s lead to the well known problems with