AI 中文总结
该研究纠正黑洞奇点是点的错误认知，证明其为面，指出旋转黑洞的奇异面在内部视界，且黑洞量子态或位于该奇异面，对量子引力有启示。
AI 中文摘要
通俗读物及其他领域广泛流传黑洞中心的奇点是一个点，这一说法并不正确。两名在同一时刻t沿不同角轨迹自由下落进入球形黑洞的观测者，并不会在中心奇点相遇，相反，他们在远离奇点的地方就已失去了彼此的因果联系。与直觉相悖的是，在广义相对论中，两个空间上靠近的点可能在因果上是分离的。奇点是一个面，而非一个点。对于旋转黑洞，情况更为复杂，但同样的结论成立：旋转黑洞的奇异面几乎肯定位于其内部视界处，此处即使是最微小的经典或量子微扰也会引发指数级的质量通胀不稳定性，进而坍缩为类空奇异面。这一结论对量子引力具有启示意义，我们认为，无论量子引力的最终理论是什么，黑洞的量子态很可能位于其有效二维奇异面上，该奇异面与黑洞在事件视界内产生的被困霍金辐射的热大气发生幺正演化，并处于热力学平衡。
英文摘要
It is widely repeated in the popular literature and elsewhere that the singularity at the center of a black hole is a point. It is not true. Two observers who free-fall into a spherical black hole along two different angular trajectories at the same time $t$ do not encounter each other at the central singularity; rather, they lose causal contact with each other already well away from the singularity. Counterintuitively, in general relativity two points can be spatially close yet causally distant. The singularity is a surface, not a point. The story for rotating black holes is more complicated, but the same conclusion holds. For a rotating black hole, the singular surface almost certainly resides at its inner horizon, where even the tiniest classical or quantum perturbations ignite the exponential mass inflation instability, precipitating collapse to a spacelike singular surface. There are implications for quantum gravity. We argue that, whatever the ultimate theory of quantum gravity may be, the quantum states of a black hole probably reside at its effectively 2-dimensional singular surface, which coevolves unitarily with, and in thermodynamic equilibrium with, the hot atmosphere of trapped Hawking radiation that the black hole generates within its event horizon.
Comments18 pages, 5 figures
Journal refPhys. Rev. D 114, 024088 (2026)
