We discuss the problem of singularity crossing in isotropic and anisotropic universes. We study at which conditions singularities can disappear in quantum cosmology and how quantum particles behave in the vicinity of singularities. Some attempts to develop general approach to the connection between the field reparametrization and the elimination of singularities is presented as well.

中文翻译：

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再次关于引力和宇宙学中的奇点穿越

我们讨论了各向同性和各向异性宇宙中的奇点交叉问题。我们研究了量子宇宙学中奇点在哪些条件下可以消失，以及量子粒子在奇点附近的行为。还提出了一些尝试来发展场重新参数化和消除奇点之间联系的一般方法。