论文标题
循环量子重力的哲学基础
Philosophical Foundations of Loop Quantum Gravity
论文作者
论文摘要
了解重力的量子方面不仅是方程式和实验的问题。重力与空间和时间的结构密切相关，并且了解量子重力要求我们找到适合理解空间和时间量子方面的概念结构。在过去的几十年中，对这个问题的广泛讨论导致了清晰的概念图，这为当今的循环量子重力提供了连贯的概念基础。我们回顾了这个基础，解决了诸如空间和时间紧急的意义，局部概念，截断的作用，可以在有限图上进行物理计算的截断，时间问题以及量子重力中可观察到的数量的表征。
Understanding the quantum aspects of gravity is not only a matter of equations and experiments. Gravity is intimately connected with the structure of space and time, and understanding quantum gravity requires us to find a conceptual structure appropriate to make sense of the quantum aspects of space and time. In the course of the last decades, an extensive discussion on this problem has led to a clear conceptual picture, that provides a coherent conceptual foundation of today's Loop Quantum Gravity. We review this foundation, addressing issues such as the sense in which space and time are emergent, the notion of locality, the role of truncation that enables physical computations on finite graphs, the problem of time, and the characterization of the observable quantities in quantum gravity.
