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科学通报  2015 

利用近距离牛顿反平方定律实验探索洛伦兹不变性破缺效应

DOI: 10.1360/N972015-00929, PP. 3278-3286

Keywords: 引力实验,牛顿反平方定律,标准模型拓展(SME),洛伦兹不变性破缺

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Abstract:

回顾了利用近距离引力实验探索洛伦兹不变性破缺效应的现状,并展望了其发展趋势.引力与物质的耦合极其微弱,近距离下牛顿反平方定律的实验检验是探索引力现象对广义相对论偏离的常用方法之一,其实验检验的基本原理是通过测量密度较大的2块薄金属片之间的引力相互作用随间距的变化,判断其是否满足牛顿反平方定律.在探索洛伦兹不变性破缺方面,通过测量2块薄金属片之间的非牛顿力的恒星时变化,可以检验标准模型拓展(SME)中包含黎曼曲率2次耦合的洛伦兹对称性破缺参数.分析表明近距离引力实验中,由于洛伦兹不变性破缺,2块有限平板间的非牛顿引力由边缘效应主导,尽管如此,现有的近距离引力实验对洛伦兹不变性破缺系数的限制仍能达到10-8m2的水平.

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