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arXiv 2303.02424gr-qchep-thmath-phmath.DGmath.MP
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广义相对论中的Angular momentum和超平移

Angular momentum and supertranslation in general relativity

Mu-Tao Wang

摘要:

如何测量在双黑洞合并过程中引力辐射带走的角动量?自20世纪60年代以来,由于“超平移模糊性”的发现,这一直是一个微妙的问题:同一系统的两个遥远的观察者记录的角动量可能不一样。在这次演讲中,我将描述准局域质量理论和最佳等距嵌入如何确定角动量的新定义,该定义没有任何超平移歧义。这是基于与Po-Ning Chen,Jordan Keller,Ye-Kai Wang和Shing-Tung Yau的联合工作。

英文摘要:

How does one measure the angular momentum carried away by gravitational radiation during the merger of a binary black hole? This has been a subtle issue since the 1960's due to the discovery of ``supertranslation ambiguity": the angular momentum recorded by two distant observers of the same system may not be the same. In this talk, I shall describe how the theory of quasilocal mass and optimal isometric embedding identifies a new definition of angular momentum that is free of any supertranslation ambiguity. This is based on joint work with Po-Ning Chen, Jordan Keller, Ye-Kai Wang, and Shing-Tung Yau.

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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