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arXiv 1111.2822gr-qcmath.DG
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特殊紧构造时间机器时空的几何分析

Geometric Analysis of Particular Compactly Constructed Time Machine Spacetimes

Jürgen Dietz, Alexander Dirmeier, Mike Scherfner

摘要:

我们制定的概念,时间机器结构的时空展示了一个封闭的类时曲线的构造区域。在回顾了A. Ori,我们提出了一个类似于在史瓦西时空的情况下进行的测地线的分析。我们的结论是,伪史瓦西时空是测地线不完整的,不能扩展到一个完整的时空。然后,我们介绍了一个旋转推广的伪史瓦西度规,我们称之为伪克尔时空。我们建立了它的时间机器结构,并分析了它的全局性质。

英文摘要:

We formulate the concept of time machine structure for spacetimes exhibiting a compactely constructed region with closed timelike curves. After reviewing essential properties of the pseudo Schwarzschild spacetime introduced by A. Ori, we present an analysis of its geodesics analogous to the one conducted in the case of the Schwarzschild spacetime. We conclude that the pseudo Schwarzschild spacetime is geodesically incomplete and not extendible to a complete spacetime. We then introduce a rotating generalization of the pseudo Schwarzschild metric, which we call the the pseudo Kerr spacetime. We establish its time machine structure and analyze its global properties.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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