论文标题
近马几何形状的通用特性
Universal properties of the near-horizon geometry
论文作者
论文摘要
我们得出了从常规表观范围的可观察性随之而来的球形对称黑洞的近水压几何形状的通用性能。只有两种类型的解决方案是可以接受的。在审查了它们的属性后，我们表明，第二种类型的解决方案的特殊形式是一致的。我们描述了这些结果如何扩展到包括爱因斯坦 - 卡丹理论在内的重力理论。然后，我们描述了必然涉及两种类型的解决方案的独特黑洞形成场景。广义的表面重力在明显的地平线上是无限的。此特征和所需的能量和时间尺度与已知的半经典结果的比较表明，观察到的天体物理黑洞是无线无压缩物体，并且地平线的存在与当前未知的物理学有关。
We derive universal properties of the near-horizon geometry of spherically symmetric black holes that follow from the observability of a regular apparent horizon. Only two types of solutions are admissible. After reviewing their properties we show that only a special form of the solutions of the second type is consistent. We describe how these results extend to modified theories of gravity, including Einstein--Cartan theories. Then we describe the unique black hole formation scenario that necessarily involves both types of solutions. The generalized surface gravity is infinite at the apparent horizon. This feature and comparison of the required energy and timescales with the known semiclassical results suggest that the observed astrophysical black holes are horizonless ultra-compact objects, and the presence of a horizon is associated with currently unknown physics.
