75 citations · 744 across the 28 of their papers we have counts for
4 papers · 1 filter
Do the Fundamental Constants Vary in the Course of the Cosmological Evolution?
A. Ivanchik, E. Rodriguez, P. Petitjean +1
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 anal…
HD Molecular Lines in an Absorption System at Redshift z = 2.3377
D. Varshalovich, A. Ivanchik, P. Petitjean +2
We have analyzed the spectrum of the quasar PKS 1232+082 obtained by Petitjean et al. (2000). HD molecular lines are identified in an absorption system at the redshift z=2.3377. Th…
The fine-structure constant: a new observational limit on its cosmological variation and some theoretical consequences
A. V. Ivanchik, A. Y. Potekhin, D. A. Varshalovich
Endeavours of the unification of the four fundamental interactions have resulted in a development of theories having cosmological solutions in which low-energy limits of fundamenta…
Testing cosmological variations of fundamental physical constants by analysis of quasar spectra
D. A. Varshalovich, A. Y. Potekhin, A. V. Ivanchik +2
Contemporary multidimensional cosmological theories predict different variations of fundamental physical constants in course of the cosmological evolution. On the basis of the QSO…