Quantum cosmological singularities
Quantum cosmological singularities
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量子宇宙奇点
DOI：
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发表时间：
1983
期刊：
影响因子：
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通讯作者：
J. Demaret
中科院分区：
文献类型：
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作者：
M. J. Gotay;J. Demaret
在量子宇宙学的框架下研究引力引起的时空塌缩问题。我们发现，在经典层面上，量子坍缩是否发生是通过时间的选择有效预先确定的。关键的区别在于“快”时代和“慢”时代之间，即分别产生完整或不完整经典进化的时代。我们猜想，酉慢时间量子动力学总是非奇异的，而酉快时间量子动力学则不可避免地导致崩溃。
The problem of gravitationally induced spacetime collapse is studied in the framework of quantum cosmology. We find that whether quantum collapse occurs is effectively predetermined, on the classical level, by the choice of time. The crucial distinction is between 'fast' and 'slow' times, that is, between times which give rise to complete or incomplete classical evolution, respectively. We conjecture that unitary slow-time quantum dynamics is always nonsingular, while unitary fast-time quantum dynamics inevitably leads to collapse.