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arXiv 2606.02496math.MGmath-phmath.DGmath.MP
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非正曲率洛伦兹空间的类时理想边界

Timelike ideal boundary of non-positively curved Lorentzian spaces

Universidad de Granada(格拉纳达大学);University of Vienna(维也纳大学)

Saúl Burgos, Mauricio Che, Miguel Prados-Abad

AI总结:

本文引入洛伦兹长度空间的类时理想边界概念,定义为未来或过去方向类时测地射线的渐近类集合,并赋予其锥拓扑和角度度量,建立了度量空间的上曲率界,最后以广义锥为模型研究了类时理想边界与纤维的度量理想边界及翘曲函数渐近行为的关系。

摘要:

我们引入洛伦兹长度空间的类时理想边界概念,作为未来或过去方向类时测地射线的渐近类集合,这一构造补充了Geroch-Kronheimer-Penrose意义上的因果边界,类似于度量空间的理想边界概念。我们赋予这样的类时理想边界一个自然的锥拓扑和一个角度度量,并建立了所得度量空间的上曲率界。最后,我们考虑广义锥作为模型,研究了类时理想边界与纤维的度量理想边界以及翘曲函数的渐近行为之间的关系。

英文摘要:

We introduce the notion of timelike ideal boundary of a Lorentzian length space as the set of asymptotic classes of future or past-directed timelike geodesic rays, a construction complementary to the causal boundary in the sense of Geroch-Kronheimer-Penrose and akin to the concept of ideal boundary of a metric space. We endow such a timelike ideal boundary with a natural cone topology and an angular metric, and establish upper curvature bounds for the resulting metric space. Finally, we consider generalized cones as a model and study the relation between the timelike ideal boundary and both the metric ideal boundary of the fiber and the asymptotic behaviour of the warping function.

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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