Cosmological evolution of fundamental constants: From theory to experiment

Cosmological Variability of Fundamental Physical Constants

Testing cosmological variability of fundamental constants

One of the topical problems of contemporary physics is a possible variability of the fundamental constants. Here we consider possible variability of two dimensionless constants which are most important for calculation of atomic and molecular spectra (in particular, the X-ray ones): the fine-structure constant α = e/h̄c and the proton-toelectron mass ratio μ = mp/me. Values of the physical consta...

Fundamental constants in effective theory

There is a discussion between L. B. Okun, G. Veneziano and M. J. Duff, concerning the number of fundamental dimensionful constants in physics [1]. They advocated correspondingly 3, 2 and 0 fundamental constants. Here we consider this problem on example of the effective relativistic quantum field theory, which emerges in the low energy corner of quantum liquids and which reproduces many features...

2 00 1 Do the fundamental constants vary in the course of the cosmological evolution ?

Do the fundamental constants vary in the course of the cosmological evolution ? Abstract – We estimate the cosmological variation of the proton-to-electron mass ratio µ = m p /m e by measuring the wavelengths of molecular hydrogen transitions in the early universe. The analysis is performed using high spectral resolution observations (F W HM ≈ 7 km/s) of two damped Lyman-α systems at z abs = 2....

Hadronic Contributions to Fundamental Constants

{ To perform model-independent calculations of the hadronic two-point contributions to several fundamental constants in physics: the electron and muon g ? 2 values 1] 2]; the mixing of the photon and the Z 0 boson in MMller scattering 3] 4]; the running of the ne structure constant (s) at Z 0 mass 5] 6]; the hyperrne structure of muonium (+ e ? bound state) 7] 8]; the energy shift in the muon-h...