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arXiv 0812.0235gr-qchep-th
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双自旋黑环的测地线和对称性

Geodesics and Symmetries of Doubly-Spinning Black Rings

Mark Durkee

摘要:

本文研究了Pomeransky-Sen'kov双旋黑环时空的各种性质。我讨论的结构的ergoregion,然后继续证明的可分离性的零,零能量测地线,存在于ergoregion的Hamilton-Jacobi方程。这些测地线被用来构造覆盖黑洞视界的几何坐标。最后,我把这种弱形式的可分性与通过卡鲁扎-克莱因约化得到的特定四维时空中的共形Killing张量的存在性联系起来,并证明了相关的共形Killing-Yano张量只存在于单自旋情况下。

英文摘要:

This paper studies various properties of the Pomeransky-Sen'kov doubly-spinning black ring spacetime. I discuss the structure of the ergoregion, and then go on to demonstrate the separability of the Hamilton-Jacobi equation for null, zero energy geodesics, which exist in the ergoregion. These geodesics are used to construct geometrically motivated coordinates that cover the black hole horizon. Finally, I relate this weak form of separability to the existence of a conformal Killing tensor in a particular 4-dimensional spacetime obtained by Kaluza-Klein reduction, and show that a related conformal Killing-Yano tensor only exists in the singly-spinning case.

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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