The fundamental constants and their variation: observational and theoretical status

  title={The fundamental constants and their variation: observational and theoretical status},
  author={Jean-Philippe Uzan},
  journal={Reviews of Modern Physics},
  • J. Uzan
  • Published 30 May 2002
  • Physics
  • Reviews of Modern Physics
This article describes the various experimental bounds on the variation of the fundamental constants of nature. After a discussion of the role of fundamental constants, their definition and link with metrology, it reviews the various constraints on the variation of the fine-structure constant, the gravitational, weak- and strong-interaction couplings and the electron-to-proton mass ratio. The review aims (1) to provide the basics of each measurement, (2) to show as clearly as possible why it… 

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