Karl Franzens University Graz
Graz University of Technology
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Karl Franzens University Graz | Graz University of Technology | |
Fundamental Constants in Physics and their Time Dependence In the Standard Model of Particle Physics there are 28 fundamental constants. In experiments these constants can be measured, but theoretically they are not understood. I will discuss these constants, which are mostly mass parameters. Astrophysical measurements indicate that the fine-structure constant depends on time. Grand unification implies a time variation of the scale of quantum chromodynamics. Thus the masses of the atomic nuclei and their magnetic moments should depend on time. I proposed an experiment, which is currently being performed by Prof. Hänsch and his group in Munich. First results indicate a time dependence of the scale of quantum chromodynamics. I will discuss the theoretical implications thereof. |