Possible evidence for a variable fine-structure constant from QSO absorption lines: motivations, analysis and results
Possible evidence for a variable fine-structure constant from QSO absorption lines: motivations, analysis and results
An experimental search for variation in the fundamental coupling constants is strongly motivated by modern high-energy physics theories. Comparison of quasar (QSO) absorption-line spectra with laboratory spectra provides a sensitive probe for variability of the fine-structure constant, α, over cosmological time-scales. We have previously developed and applied a new method …