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arXiv 0902.2811gr-qc
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引力空间膨胀

Gravitational Space Dilation

Richard J. Cook

摘要:

我们指出,如果人们接受原子钟上的标准秒在低引力势下膨胀(普通引力时间膨胀)的观点,那么标准米也必须在低引力势下以相同的因子膨胀(引力空间膨胀)。这些效应可以被看作是引力场对时间和长度标准的扭曲,用这些扭曲的标准进行的测量可以通过应用于广义相对论通常的时空度规的保角变换来“校正”。与传统的“多观测者”解释广义相对论相比,这个单观测者图像令人惊讶的特点是,对静态引力场中许多现象的解释和形式化大大简化。

英文摘要:

We point out that, if one accepts the view that the standard second on an atomic clock is dilated at low gravitational potential (ordinary gravitational time dilation), then the standard meter must also be dilated at low gravitational potential and by the same factor (gravitational space dilation). These effects may be viewed as distortions of the time and length standards by the gravitational field, and measurements made with these distorted standards can be "corrected" by means of a conformal transformation applied to the usual spacetime metric of general relativity. The surprising feature of this single-observer picture is a substantial simplification of interpretation and formalism for numerous phenomena in a static gravitational field as compared to the conventional "many-observer" interpretation of general relativity.

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