Bah Ibrahima, Heidmann Pierre
Department of Physics and Astronomy, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, USA.
Phys Rev Lett. 2021 Apr 16;126(15):151101. doi: 10.1103/PhysRevLett.126.151101.
We study smooth bubble spacetimes in five-dimensional Einstein-Maxwell theory that resemble four-dimensional magnetic black holes upon Kaluza-Klein reduction. We denote them as topological stars since they have topological cycles supported by magnetic flux. They can be macroscopically large compared to the size of the Kaluza-Klein circle and could describe qualitative properties of microstate geometries for astrophysical black holes. We also describe five-dimensional black strings without curvature singularity, the interior caps as a two-dimensional Milne space with a bubble.
我们研究五维爱因斯坦 - 麦克斯韦理论中的光滑泡状时空，这种时空在卡鲁扎 - 克莱因约化后类似于四维磁黑洞。我们将它们称为拓扑星，因为它们具有由磁通量支撑的拓扑圈。与卡鲁扎 - 克莱因圆的大小相比，它们在宏观上可以很大，并且可以描述天体物理黑洞微态几何的定性性质。我们还描述了没有曲率奇点的五维黑弦，其内部帽状物是具有一个泡的二维米尔恩空间。
