标题： 视界壳：黑洞视界的经典结构 显示英文标题

标题： Horizon Shells: Classical Structure at the Horizon of a Black Hole

摘要： 我们通过考虑以下问题来探讨施瓦茨希尔德黑洞的唯一性：存在多少个有意义的爱因斯坦方程解，这些解除了可能在一个余维一的超曲面外，其他地方都与施瓦茨希尔德解（具有固定质量m）一致？ 令人惊讶的答案是，除非该超曲面是施瓦茨希尔德黑洞的事件视界，否则解是唯一的（并且在时空中的每个地方都是唯一的施瓦茨希尔德解）。在这种情况下，实际上存在无限多个不同的解。 我们解释这一结果，并对黑洞物理的一些可能影响进行评论。 显示英文摘要

摘要： We address the question of the uniqueness of the Schwarzschild black hole by considering the following question: How many meaningful solutions of the Einstein equations exist that agree with the Schwarzschild solution (with a fixed mass m) everywhere except maybe on a codimension one hypersurface? The perhaps surprising answer is that the solution is unique (and uniquely the Schwarzschild solution everywhere in spacetime) *unless* the hypersurface is the event horizon of the Schwarzschild black hole, in which case there are actually an infinite number of distinct solutions. We explain this result and comment on some of the possible implications for black hole physics.