发表机构
University of Science and Technology of China; Peng Huanwu Center for Fundamental Theory; Ningbo University(中国科学技术大学; 彭桓武理论研究中心; 宁波大学)
机构由 AI 辅助整理,请以论文原文为准。AI 中文总结
本文通过引入新坐标扩展Kerr-Newman-Bertotti-Robinson时空,揭示两个黑洞共享非平凡拓扑外部及裸环奇点,并在静态极限下与Alekseev-García几何等价。
AI 中文摘要
我们引入新的坐标,这些坐标与之前的互反延拓一致地扩展了Kerr-Newman-Bertotti-Robinson时空。在这些坐标中,Ω=0处的两个点被解析为完整的Bertotti-Robinson零无穷远。扩展的时空描述了共享一个具有非平凡拓扑的共同外部的两个黑洞,以及一个裸环奇点。在正则静态极限下,新坐标将时空全局等同于平衡的Alekseev-García几何。
英文摘要
We introduce new coordinates that extend the Kerr--Newman--Bertotti--Robinson spacetime consistently with the previous reciprocal continuation. In these coordinates, the two points at $Ω=0$ are resolved into complete Bertotti--Robinson null infinities. The extended spacetime describes two black holes sharing a common exterior of nontrivial topology, together with a naked ring singularity. In the regular static limit, the new coordinates globally identify the spacetime with the balanced Alekseev--García geometry.
Commentsrevtex4, 10 pages, 4 figures