Testing the Stability of the Fine Structure Constant in the Laboratory

Details Testing the Stability of the Fine Structure Constant in the Laboratory Testing the Stability of the Fine Structure Constant in the Laboratory

2009-04-10

arxiv.org/abs/0904.1663v1

Physics

Quantum Physics

23 pages, 10 figures, The ISSI Workshop, 6-10 October 2008, on The Nature of Gravity "Confronting Theory and Experiment in Spa

Scientific paper

In this review we discuss the progress of the past decade in testing for a possible temporal variation of the fine structure constant $\alpha$. Advances in atomic sample preparation, laser spectroscopy and optical frequency measurements led to rapid reduction of measurement uncertainties. Eventually laboratory tests became the most sensitive tool to detect a possible variation of $\alpha$ at the present epoch. We explain the methods and technologies that helped make this possible.

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