Nonsingular Model of the Universe with the Quantum-Gravitational de Sitter Stage and its Observational Consequences
Nonsingular Model of the Universe with the Quantum-Gravitational de Sitter Stage and its Observational Consequences
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具有量子引力德西特阶段的宇宙非奇异模型及其观测结果
DOI：
10.1007/978-1-4613-2701-1_8
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发表时间：
1984
期刊：
影响因子：
--
通讯作者：
A. Starobinsky
中科院分区：
文献类型：
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作者：
A. Starobinsky
现在被广泛接受的标准弗里德曼-罗伯逊-步行者宇宙学模型很好地描述了我们宇宙的现代状态，但它遇到了一个根本性的困难，即在过去的某个有限时刻t = 0存在奇点。弗里德曼解不能解析地延拓到t < 0的区域，严格地说，那里没有空间也没有时间。因此，在经典广义相对论的范围内，原则上不可能问我们的宇宙在t = 0之前的状态是什么。因此，在这里设定了人类认知的界限。考虑更一般的非均匀和各向异性宇宙学模型并不能改善这种情况，因为众所周知，这些模型也是奇异的。
The standard Friedmann-Robertson-Walker cosmological model which is widely accepted now provides a good description of the modern state of our Universe, but it encounters a fundamental difficulty, namely, the existence of a singularity at some finite moment of time t = 0 in the past. The Friedman solution cannot be analytically continued to the region t < 0 where, strictly speaking, there is no space and no time. So, in the scope of classical general relativity, it is in principle impossible to ask what was the state of our Universe before t = 0. Thus a bound to the human cognition is set here. The consideration of more general inhomogeneous and anisotropic cosmological models does not improve the situation because, as is well known, these models are also singular.1