In this paper, we argue that the problem of time is not a crucial issue inherent in the quantum picture of the universe evolution. On the minisuperspace model example with the massless scalar field, we demonstrate four approaches to the description of quantum evolution, which give similar results explicitly. The relevance of these approaches to building a quantum theory of gravity is discussed.

中文翻译：

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量子引力中时间演化的证据

在本文中，我们认为时间问题并不是宇宙演化的量子图所固有的关键问题。在具有无质量标量场的微型超空间模型示例中，我们演示了描述量子演化的四种方法，它们给出了明确的相似结果。讨论了这些方法与建立引力量子理论的相关性。