Fundamental constants are a cornerstone of our physical laws. Any constant varying in
space and/or time would reflect the existence of an almost massless field that couples to …

This paper presents cosmological results based on full-mission Planck observations of
temperature and polarization anisotropies of the cosmic microwave background (CMB) …

We demonstrate that massive fields, such as dark matter, can directly produce a
cosmological evolution of the fundamental constants of nature. We show that a scalar or …

An overview is presented of the H 2 quasar absorption method to search for a possible
variation of the proton-electron mass ratio μ= mp/me on a cosmological time scale. The …

Any variation in the fundamental physical constants, more particularly in the fine structure
constant, α, or in the mass of the electron, me, affects the recombination history of the …

The fundamental constants at recombination can differ from their present-day values due to
degeneracies in cosmological parameters, raising the possibility of yet-undiscovered …

The Constancy of the Constants of Nature: Updates Page 1 INVITED PAPERS 993 Progress
of Theoretical Physics, Vol. 126, No. 6, December 2011 The Constancy of the Constants of …

The rich absorption spectra of Sun-like stars are enticing probes for variations in the fine-
structure constant, α, which gauges the strength of electromagnetism. While individual line …

We explore a model introduced by Cyr-Racine et al.[Phys. Rev. Lett. 128, 201301 (2022)
PRLTAO 0031-9007 10.1103/PhysRevLett. 128.201301] that resolves the Hubble tension by …

Any variation in the fundamental physical constants, more particularly in the fine structure
constant, α, or in the mass of the electron, m< sub> e, affects the recombination history of the …