Does an unspecified cosmological constant solve the problem of time in quantum gravity?
Does an unspecified cosmological constant solve the problem of time in quantum gravity?
复制标题
未指定的宇宙学常数能否解决量子引力中的时间问题？
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
Karel V. Kucha
中科院分区：
文献类型：
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作者：
Karel V. Kucha
在单模引力中，一个未指定的宇宙学常数表现为一个变量，与一个四体积变量——宇宙学时间——典型地共轭。这一次设定了量子测量的条件，从而解决了量子几何动力学的解释问题。通过分析宇宙时间与超时间（类空间超曲面的集合）的关系，我们强调了这种位置的困难。
In unimodular gravity, an unspecified cosmological constant appears as a variable canonically conjugate to a four-volume variable, the cosmological time. It was suggested that this time sets the conditions of quantum measurements and solves thereby the interpretation problems of quantum geometrodynamics. By analyzing the relationship of the cosmological time to hypertime (the collection of spacelike hypersurface), we highlight the difficulties of such a position.