Do the fundamental constants change with time?

Details Do the fundamental constants change with time? Do the fundamental constants change with time?

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012basi...40...21k&link_type=abstract

Bulletin of the Astronomical Society of India, Vol. 40, p. 21

Astronomy and Astrophysics

Astronomy

Line: Profiles, Techniques: Spectroscopic, Radio Lines

Scientific paper

Comparisons between the redshifts of multiple spectral transitions from distant galaxies provide a sensitive probe of secular changes in fundamental constants like the fine structure constant and the proton-electron mass ratio. This article discusses the pros and cons of the various techniques that have been used to test for such changes, and summarizes the current status of the field and the directions for progress with upcoming radio and optical telescopes.

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