本书暂定概念：尚未进入正式概念库。下面是本书给出的定义原文。
定义 · 6.1 施瓦西解
事实证明，施瓦西解(6.1)是真空爱因斯坦方程唯一的球对称、渐近平直解。这被称为伯克霍夫定理(Birkhoff theorem)。特别地，这意味着施瓦西解所描述的并不只是一个黑洞，它还描述了任何不旋转的球对称物体（例如恒星）外部的时空。
英文原文
The Schwarzschild solution (6.1) is, it turns out, the unique spherically symmetric, asymptotically flat solution to the vacuum Einstein equations. This is known as the Birkhoff theorem. In particular, this means that the Schwarzschild solution does not just describe a black hole, but it describes the spacetime outside any non-rotating, spherically symmetric object, like a star.
出处：6.1 施瓦西解 · node a-5665ec6501ac53640e41855b · 源节点 SHA-256 9f4b5f92f7b071d7…