SSP2012 - 5th International Symposium on Symmetries in Subatomic Physics

The comparison of different types of clocks and frequency standards over periods of a few years has allowed to place stringent limits on variations of fundamental constants in terrestrial laboratories in the present epoch. Presently, all experiments are consistent with the constancy of constants, for example the relative change of the fine structure constant is constrained in the range of the...

There are new results for the variation of the fine structure constant alpha based on the quasar absorption spectra data. These results indicate the variation of alpha in space [1]. The spatial variation can explain fine tuning of the fundamental constants which allows humans (and any life) to appear. We appeared in the area of the Universe where the values of the fundamental constants are...

I review theoretical status of some models that were invoked in connection with "change of couplings in time" and "Lorentz invariance violation", and give my personal perspective on this subject. I then argue that the scope of the present experimental program can be expanded, in particular in the direction embracing the search for the short-time transient effects using precise clocks and magnetometers.