论文标题
双零量表中无效无穷大的角动量的超跨倾斜度不变性
Supertranslation invariance of angular momentum at null infinity in double null gauge
论文作者
论文摘要
作者在\ cite {ckwwy_evol，cwwy_atmp}中确定了Bondi-Sachs形式主义/规格中Chen-Wang-yau（CWY）角动量的超级跨度不变性。在本文中，我们研究了双零仪表中的相应问题。特别是，确定了该规格的超级翻译歧义，并且CWY角动量被证明没有这种歧义。 CWY质量积分中心获得了类似的结果。
The supertranslation invariance of the Chen-Wang-Yau (CWY) angular momentum in the Bondi-Sachs formalism/gauge was ascertained by the authors in \cite{CKWWY_evol, CWWY_atmp}. In this article, we study the corresponding problem in the double null gauge. In particular, supertranslation ambiguity of this gauge is identified and the CWY angular momentum is proven to be free of this ambiguity. A similar result is obtained for the CWY center of mass integral.
