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arXiv 2108.10239gr-qc
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广义相对论中的几种异常虫洞

Some unusual wormholes in general relativity

K. A. Bronnikov

摘要:

在这篇简短的综述中,我们介绍了最近获得的一些在广义相对论(GR)的框架下在四维和六维的虫洞模型,在某种程度上拓宽了我们对虫洞存在和性质的共同想法。首先,这些是旋转的圆柱形虫洞,在径向方向上渐进平坦,并且不存在奇异物质。拓扑审查定理不违反由于缺乏渐近平坦性在所有空间方向。第二,这些是基于勒梅特-托尔曼-邦迪解构造的宇宙虫洞。它们连接了一个充满灰尘的封闭的弗里德曼世界的两个副本,或者同一个弗里德曼世界的两个遥远的部分。第三,这些是在六维GR中获得的虫洞,其一个入口位于“我们的”具有非常小额外维度的渐近平坦世界中,而另一个“端”属于具有大额外维度的宇宙,因此具有不同的物理性质。这种虫洞的可能观察到的功能进行了简要的讨论。

英文摘要:

In this short review we present some recently obtained traversable wormhole models in the framework of general relativity (GR) in four and six dimensions that somehow widen our common ideas on wormhole existence and properties. These are, first, rotating cylindrical wormholes, asymptotically flat in the radial direction and existing without exotic matter. The topological censorship theorems are not violated due to lack of asymptotic flatness in all spatial directions. Second, these are cosmological wormholes constructed on the basis of the Lemaitre-Tolman-Bondi solution. They connect two copies of a closed Friedmann world filled with dust, or two otherwise distant parts of the same Friedmann world. Third, these are wormholes obtained in six-dimensional GR, whose one entrance is located in "our" asymptotically flat world with very small extra dimensions while the other "end" belongs to a universe with large extra dimensions and therefore different physical properties. The possible observable features of such wormholes are briefly discussed.

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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