标题： 时间不是问题 显示英文标题

标题： Time is not the problem

摘要： 尝试对广义相对论进行量子化遇到了一个奇怪的问题。 通常生成时间演化的哈密顿量在广义相对论的情况下由于微分同胚不变性而消失。 该理论似乎在说时间并不存在。 我们世界中最明显的特征，即时间似乎在推进，世界相应地发生变化，在这个 presumably 基本的理论中成为了一个问题。 这被称为时间问题。 在本文中，我们认为这个问题是由于一种不现实的理想化造成的。 因为我们早在相对论早期就永久地将几何和物质的分割包含进我们的物理理论中，所以我们陷入了这个“时间问题”的陷阱。 我们证明了另一种可能性存在，它可以绕过时间问题，并且还为其他问题如宇宙常数问题和早期宇宙宇宙学中的视界问题提供了新的见解。 显示英文摘要

摘要： Attempts to quantize general relativity encounter an odd problem. The Hamiltonian that normally generates time evolution vanishes in the case of general relativity as a result of diffeomorphism invariance. The theory seems to be saying that time does not exist. The most obvious feature of our world, namely that time seems to progress and that the world changes accordingly becomes a problem in this presumably fundamental theory. This is called the problem of time. In this essay we argue that this problem is the result of an unphysical idealization. We are caught in this "problem of time" trap because we took a wrong turn in the early days of relativity by permanently including a split of geometry and matter into our physical theories. We show that another possibility exists that circumvents the problem of time and also sheds new light on other problems like the cosmological constant problem and the horizon problem in early universe cosmology.