Article

# Variation of Fine Structure Constant from Non-Universal Gravity

09/2002;
Source: arXiv

ABSTRACT We relate the reported variation in the value of the fine structure constant to a possible non-universality of the gravitational interaction with respect to different particle generations.

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06/2001;
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##### Article: The Cosmological Evolution of the Nucleon Mass and the Electroweak Coupling Constants
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ABSTRACT: Starting from astrophysical indications that the fine structure constant might undergo a small cosmological time shift, we discuss the implications of such an effect from the point of view of particle physics. Grand unification implies small time shifts for the nucleon mass, the magnetic moment of the nucleon and the weak coupling constant as well. The relative change of the nucleon mass is about 40 times larger than the relative change of alpha. Laboratory measurements using very advanced methods in quantum optics might soon reveal small time shifts of the nucleon mass, the magnetic moment of the nucleon and the fine structure constant.
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