Fine-structure constant: Is it really a constant?

Details Fine-structure constant: Is it really a constant? Fine-structure constant: Is it really a constant?

Mar 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982phrvd..25.1527b&link_type=abstract

Physical Review D (Particles and Fields), Volume 25, Issue 6, 15 March 1982, pp.1527-1539

Mathematics

Logic

219

Scientific paper

It is often claimed that the fine-structure "constant" α is shown to be strictly constant in time by a variety of astronomical and geophysical results. These constrain its fractional rate of change α˙α to at least some orders of magnitude below the Hubble rate H0. We argue that the conclusion is not as straightforward as claimed since there are good physical reasons to expect α˙α<

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