量子几何动力学：何处，向何处去？
Quantum geometrodynamics: whence, whither?
摘要：
量子几何动力学是以三度规为位形变量的正则量子引力。它的中心方程是惠勒-德威特方程。在这里，我将概述这一方法的现状。讨论的问题包括时间问题、与协变理论的关系、半经典近似以及在黑洞和宇宙学中的应用。我的结论是，量子几何动力学仍然是一个可行的方法，并提供了见解的概念和技术方面的量子引力。
英文摘要：
Quantum geometrodynamics is canonical quantum gravity with the three-metric as the configuration variable. Its central equation is the Wheeler--DeWitt equation. Here I give an overview of the status of this approach. The issues discussed include the problem of time, the relation to the covariant theory, the semiclassical approximation as well as applications to black holes and cosmology. I conclude that quantum geometrodynamics is still a viable approach and provides insights into both the conceptual and technical aspects of quantum gravity.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
