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arXiv 2409.09094gr-qcmath.DG
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Kerr时空中闭合类时测地线的不存在性

Nonexistence of closed timelike geodesics in Kerr spacetimes

Giulio Sanzeni

AI总结:

本文证明Kerr-star时空虽含闭合类时曲线,却不存在闭合类时测地线,并结合既有结果得出其中不存在任何闭合因果测地线。

摘要:

Kerr-star时空是Kerr时空越过视界并在负径向区域上的延拓。尽管内视界下方存在闭合类时曲线,我们证明了在Kerr-star时空中类时测地线不可能闭合。由于闭合零测地线的存在性已由作者在Sanzeni [arXiv:2308.09631v3 (2024)]中排除,该结果表明Kerr-star时空中不存在闭合因果测地线。

英文摘要:

The Kerr-star spacetime is the extension over the horizons and in the negative radial region of the Kerr spacetime. Despite the presence of closed timelike curves below the inner horizon, we prove that the timelike geodesics cannot be closed in the Kerr-star spacetime. Since the existence of closed null geodesics was ruled out by the author in Sanzeni [arXiv:2308.09631v3 (2024)], this result shows the absence of closed causal geodesics in the Kerr-star spacetime.

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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