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arXiv 0804.2911math-phmath.MP
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局部度量时空

Locally Metric Spacetimes

Richard Atkins

摘要:

传统上,时空是用可微四维流形上的整体洛伦兹度规来描述的。在这里,我们探讨的可能性,时空定义的连接,这是局部的,但不是全球Levi-Civita。获得这样的连接的一般方法是由一个例子,修改平坦的类空超曲面的罗伯逊-沃克时空的非退化的情况下。

英文摘要:

Spacetimes have conventionally been described by a global Lorentzian metric on a differentiable four-manifold. Herein we explore the possibility of spacetimes defined by a connection, which is locally but not globally Levi-Civita. The general method of obtaining such connections is presented for the non-degenerate case followed by an example that modifies the Robertson-Walker spacetimes for flat spacelike hypersurfaces.

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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