论文标题
极端视野的BMS状对称性
The BMS-like symmetry of extremal horizons
论文作者
论文摘要
我重新审查了在孤立视野附近出现的无限维对称性的计算。我将注意力集中在极端黑洞上，为此，在该孔中保留了一组明智的渐近边界条件，严格包括BMS代数。但是，与该BMS扇区相对应的保守电荷减少了超级脱位，仅生成两个Witt代数的副本。相比之下，对于更通用的视野等法，电荷代数确实包括WITT和超级翻译，类似于BMS但S.STR。与之不同。 这项工作已经为2020年11月在智利举行的XXII Simposio Sofichi的会议记录做好了准备。此处的材料是基于我与Laura Donnay，Hernan Gonzalez和Miguel Pino合作的工作，其中包括在Arxiv：1511.08687和Arxiv：1511.08687 and Arxiv：1607.057.05703.05703.05703.03.05703。
I revisit the calculation of infinite-dimensional symmetries that emerge in the vicinity of isolated horizons. I focus the attention on extremal black holes, for which the isometry algebra that preserves a sensible set of asymptotic boundary conditions at the horizon strictly includes the BMS algebra. The conserved charges that correspond to this BMS sector, however, reduce to those of superrotation, generating only two copies of Witt algebra. For more general horizon isometries, in contrast, the charge algebra does include both Witt and supertranslations, being similar to BMS but s.str. differing from it. This work has been prepared for the proceedings of the XXII Simposio Sofichi 2020, held in Chile in November 2020. The material herein is based on my work in collaboration with Laura Donnay, Hernan Gonzalez and Miguel Pino, and it is included in arXiv:1511.08687 and arXiv:1607.05703.
