论文标题
搜索我们银河中心超级质量黑洞周围的精细结构的变化
Search for a Variation of the Fine Structure around the Supermassive Black Hole in Our Galactic Center
论文作者
论文摘要
搜索自然常数的时空变化是一种有前途的方法，可以在一般相对论之外寻找新物理学以及由暗物质和暗能量的统一理论和模型所激发的标准模型。我们提出了一种新的方法，以使用S-Star群集的晚期进化的巨星的测量来搜索精细结构常数的变化，从而绕着我们银河中心的超质量黑洞运行。测量恒星的不同吸收线（对精细结构常数的敏感性不同）之间的差异导致对恒星位置和地球之间细胞结构常数变化的直接估计。使用5星的光谱测量值，我们对$ 10^{-5} $的细胞常数的相对变化获得了约束。这是第一次在黑洞周围搜索不同自然常数，并且具有很高的重力潜力。该分析表明，可以使用银河中心中恒星监测的新方法来探测基本物理学。
Searching for space-time variations of the constants of Nature is a promising way to search for new physics beyond General Relativity and the standard model motivated by unification theories and models of dark matter and dark energy. We propose a new way to search for a variation of the fine-structure constant using measurements of late-type evolved giant stars from the S-star cluster orbiting the supermassive black hole in our Galactic Center. A measurement of the difference between distinct absorption lines (with different sensitivity to the fine structure constant) from a star leads to a direct estimate of a variation of the fine structure constant between the star's location and Earth. Using spectroscopic measurements of 5 stars, we obtain a constraint on the relative variation of the fine structure constant below $10^{-5}$. This is the first time a varying constant of Nature is searched for around a black hole and in a high gravitational potential. This analysis shows new ways the monitoring of stars in the Galactic Center can be used to probe fundamental physics.
