Fundamental physics with ESPRESSO: Constraints on Bekenstein and dark energy models from astrophysical and local probes<SUP>*</SUP>
Dynamical scalar fields in an effective four-dimensional field theory are naturally expected to couple to the rest of the theory's degrees of freedom, unless some new symmetry is postulated to suppress these couplings. In particular, a coupling to the electromagnetic sector will lead to spacetime variations of the fine-structure constant, α
Martins, C. J. A. P. et al.
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2022