Possible variations of the fine structure constant α and their metrological significance
K. A. Bronnikov, S. A. Kononogov
Abstract
We briefly review the recent experimental results on possible variations of the fine structure constant α on the cosmological time scale and its position dependence. We outline the theoretical grounds for the assumption that α might be variable, mention some phenomenological models incorporating a variable α into the context of modern cosmology and discuss the significance of possible α variations for theoretical and practical metrology.
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