QSNET, a network of clocks for measuring the stability of fundamental
  constants
  The QSNET consortium is building a UK network of next-generation atomic and
molecular clocks that will achieve unprecedented sensitivity in testing
variations of the fine structure constant, $\alpha$, and the electron-to-proton
mass ratio, $\mu$. This in turn will provide more stringent constraints on a
wide range of fundamental and phenomenological theories beyond the Standard
Model and on dark matter models.
