Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2002-10-19
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
3 pages revtex, comments welcome
Scientific paper
Recent observations of the fine structure of spectral lines in the early
universe have been interpreted as a variation of the fine structure constant.
From the assumed validity of Maxwell equations in general relativity and well
known experimental facts, it is proved that $e$ and $\hbar$ are absolute
constants. On the other hand, the speed of light need not be constant.
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