99 citations · 610 across the 15 of their papers we have counts for
14 papers
Acetaldehyde as a molecule for testing variations of electron-to-proton mass ratio
J. S. Vorotyntseva, S. A. Levshakov, M. G. Kozlov
We present the quantum-mechanical calculations of the dimensionless sensitivity coefficients Q to small changes in the fundamental physical constant mu = m_e/m_p - the electron-to-…
Hyperfine structure of the methanol molecule as traced by Class I methanol masers
I. I. Agafonova, O. S. Bayandina, Y. Gong +9
We present results on simultaneous observations of Class~I methanol masers at 25, 36, and 44 GHz towards 22 Galactic targets carried out with the Effelsberg 100-m telescope. The st…
Spectroscopic Shifts in Deuterated Methanol Induced by Variation of me/mp
J. S. Vorotyntseva, S. A. Levshakov, M. G. Kozlov
Numerical calculations of the sensitivity coefficients, Q_mu, of microwave molecular transitions in the ground torsion-rotation state of deuterated methanol (CH3OD, CD3OH, and CD3O…
Methanol isotopologues as a probe for spatial and temporal variations of the electron-to-proton mass ratio
J. S. Vorotyntseva, M. G. Kozlov, S. A. Levshakov
We present results on numerical calculations of the sensitivity coefficients, Qmu, of microwave molecular transitions in (13C)H3OH and CH3(18O)H to the hypothetical variation in th…
A search for varying fundamental constants using Hz-level frequency measurements of cold CH molecules
S. Truppe, R. J. Hendricks, S. K. Tokunaga +5
Many modern theories predict that the fundamental constants depend on time, position, or the local density of matter. We develop a spectroscopic method for pulsed beams of cold mol…
Microwave and submillimeter molecular transitions and their dependence on fundamental constants
M. G. Kozlov, S. A. Levshakov
Microwave and submillimeter molecular transition frequencies between nearly degenerated rotational levels, tunneling transitions, and mixed tunneling-rotational transitions show an…