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Possible variations of the fine structure constant α and their metrological significance

REVIEW ARTICLE

K A Bronnikov and S A Kononogov

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REVIEW ARTICLE

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.


PACS

06.20.Jr Determination of fundamental constants

98.80.-k Cosmology

Subjects

Instrumentation and measurement

Gravitation and cosmology

Astrophysics and astroparticles

Dates

Issue 5 (October 2006)

Received 6 January 2005

Published 12 September 2006



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