space-time curvature的意思|示意

With Roger Penrose I showed that if Einstein's general theory of relativity is correct, there would be a singularity, a point of infinite density and space-time curvature, where time has a beginning.

Roger Penrose 和我曾表明，如果爱因斯坦的一般相对论是正确的，那就会有一个特例，在无限密集和空间时间弯曲这一点上，时间就会有一个开端。

Without space-time curvature, there is no meaning to general relativity, ie. , classical gravity… without classical gravity, what is the meaning of quantizing it?

或许在一个时空弯曲不再是必须条件的情况下，能够成功的将引力量子化。

Gravitational waves are fluctuations in the curvature of space and time which propagate through the universe as gravitational waves — outward from its source.

时间与空间的弯曲贯穿整个宇宙，其中的起伏就是重力波，它自起源处向外散发。