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科学通报  2014 

广义相对论中引力传播速度的测量问题

DOI: 10.1360/csb2014-59-4-5-323, PP. 323-327

Keywords: 广义相对论,引力速度,光速,洛伦兹不变性

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Abstract:

牛顿万有引力定律认为引力场的传播不需要时间,是瞬时相互作用,而广义相对论认为瞬时相互作用是不存在的.因此,在观测和研究引力潮汐时,牛顿万有引力定律是否需要修改是一个值得探讨的问题.本文说明在现有的广义相对论框架下,牛顿引力定律是完全适用的.后牛顿近似计算的结果表明,引力传播速度的可观测效应与物体运动速度的大小无关,只依赖于物体运动的加速度.一般来说,这一可观测效应非常微弱,目前的任何天文观测,包括太阳潮汐观测均不能证实引力传播速度与光速相同.

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