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arXiv 2104.02167gr-qchep-th
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叶状时空中的Killing张量和光子面

Killing tensors and photon surfaces in foliated spacetimes

Kirill Kobialko, Igor Bogush, Dmitri Gal'tsov

摘要:

我们提出了一种纯粹的几何方法,用于在余维为一的叶理时空中构造二阶Killing张量,该方法将平凡的Killing张量从切片提升到整个流形。由此产生的Killing张量可以是非平凡的。一个深刻的联系之间的存在,这样的一个Killing张量和广义光子表面的存在,在时空中的两个Killing矢量场。这种技术以纯代数的方式生成Killing张量,而不需要求解微分方程。我们的方法的使用被证明为克尔,克尔-纽曼-NUT-AdS度规和克尔-NUT-AdS多电荷规范超引力解。

英文摘要:

We present a purely geometric method for constructing a rank two Killing tensor in a spacetime with a codimension one foliation that lifts the trivial Killing tensors from slices to the entire manifold. The resulting Killing tensor can be nontrivial. A deep connection is found between the existence of such a Killing tensor and the presence of generalized photon surfaces in spacetime with two Killing vector fields. This technique generates Killing tensors in a purely algebraic way, without solving differential equations. The use of our method is demonstrated for Kerr, Kerr-Newman-NUT-AdS metrics and Kerr-NUT-AdS multicharge gauged supergravity solution.

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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