We present a global metric describing closed timelike curves embedded in Minkowski spacetime. Physically, the metric represents an Alcubierre warp drive on a rotating platform. The physical realizability of such a metric is uncertain due to the exotic matter required to produce it. Never-the-less we suggest that this metric will have applications in more rigorously studying the behavior of quantum fields interacting with closed timelike curves.

中文翻译：

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转动时光机

我们提出了一个全局度量，描述了嵌入 Minkowski 时空的闭合类时曲线。从物理上讲，该度量代表旋转平台上的 Alcubierre 曲速驱动器。由于产生它所需的外来物质，这种度量的物理可实现性是不确定的。尽管如此，我们建议该指标将应用于更严格地研究量子场与闭合类时曲线相互作用的行为。