Fundamental Constants in Physics and Their Time Dependence

Speaker: Harald Fritzsch, München

When: April 5, 2007 (Thu), 04:00PM to 05:00PM (add to my calendar)

This event is part of the HET Seminar Series.

There are at least 25 fundamental constants in physics, such as e.g. the fine structure constant. I discuss them, and the attempts to reduce the number of constants, in particular within the scheme of Grand Unification of all interactions. Recently a small time variation of the fine structure constant was reported. Considering grand unification I conclude that also the QCD scale must change. An experiment at the MPQ in Munich is made by Haensch and his group. Their results will be discussed and interpreted.