标题： 关于Cauchy视界生成元的动力学 显示英文标题

标题： On the dynamics of generators of Cauchy horizons

摘要： 我们讨论由Cauchy视界的零测地线生成元的流确定的动力系统的各种特性。构造了几个具有非平凡（“混沌”、“奇异吸引子”等）全局行为的例子。这些例子与“时间顺序保护假说”相关，并表明“喷泉”的出现是Cauchy视界的{\em 不是}一种普遍特性。 显示英文摘要

摘要： We discuss various features of the dynamical system determined by the flow of null geodesic generators of Cauchy horizons. Several examples with non--trivial (``chaotic'', ``strange attractors'', etc.) global behaviour are constructed. Those examples are relevant to the ``chronology protection conjecture'', and they show that the occurrence of ``fountains'' is {\em not} a generic feature of Cauchy horizons.