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arXiv 2107.00752gr-qcmath-phmath.MP
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使用广义对称嵌入构造方法的 BTZ 时空全局嵌入

Global embedding of BTZ spacetime using generalized method of symmetric embeddings construction

A. A. Sheykin, M. V. Markov, S. A. Paston

AI总结:

提出一种基于群论变量分离的算法,用于构造伪黎曼流形到高维环境空间的显式等距嵌入,简化了已知嵌入并获得了旋转 BTZ 黑洞在 7 维平坦空间中的新全局嵌入。

摘要:

通过将伪黎曼流形表示为某环境空间中的曲面,通常更容易对其进行研究。我们提出了一种算法,用于构造具有对称性的伪黎曼流形到更高维环境空间的显式等距嵌入。现有大多数方法基于 Gauss-Codazzi-Mainardi-Peterson 方程,而我们不使用它们,而是专注于连接流形上的度规和曲面嵌入函数的方程组。我们的算法基于我们早先开发的变量分离的群论方法(arXiv:1202.1204)。该算法使此方法更便于简单使用。它使我们能够简化许多已知嵌入的构造,并获得一些新嵌入。特别地,我们获得了旋转 BTZ 黑洞在 7 维平坦空间中的显式全局嵌入。

英文摘要:

It is often easier to study pseudo-Riemannian manifolds by presenting them as surfaces in some ambient space. We propose an algorithm for construction of explicit isometric embeddings of pseudo-Riemannian manifolds with symmetries into an ambient space of higher dimension. While most of the existing methods are based on Gauss-Codazzi-Mainardi-Peterson equations, we do not use them and instead concentrate on a system of equations which connects the metric on the manifold and the embedding function of the surface. Our algorithm is based on the group theoretical method of separation of variables that we developed earlier (arXiv:1202.1204). The algorithm makes this method more convenient and simple to use. It allowed us to simplify the construction of many known embeddings as well as obtain some new ones. In particular, we obtain explicit global embeddings of spinning BTZ black hole in 7-dimensional flat space.

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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