385 citations · 2.6k across the 90 of their papers we have counts for
5 papers · 2 filters
A New Option for a Search for Alpha Variation: Narrow Transitions with Enhanced Sensitivity
S. G. Karshenboim, A. Yu. Nevsky, E. J. Angstmann +2
We consider several transitions between narrow lines that have an enhanced sensitivity to a possible variation of the fine structure constant, alpha. This enhancement may allow a s…
Corrections to the energy levels of a spin-zero particle bound in a strong field
R. N. Lee, A. I. Milstein, S. G. Karshenboim
Formulas for the corrections to the energy levels and wave functions of a spin-zero particle bound in a strong field are derived. General case of the sum of a Lorentz-scalar potent…
The Uehling correction to the energy levels in a pionic atom
S. G. Karshenboim, E. Yu. Korzinin, V. G. Ivanov
We consider a correction to energy levels in a pionic atom induced by the Uehling potential, i.e., by a free electron vacuum-polarization loop. The calculation is performed for cir…
Fundamental Physical Constants: Looking from Different Angles
Savely G. Karshenboim
We consider fundamental physical constants which are among a few of the most important pieces of information we have learned about Nature after its intensive centuries-long studies…
Frequency comparisons and absolute frequency measurements of 171Yb+ single-ion optical frequency standards
E. Peik, B. Lipphardt, H. Schnatz +3
We describe experiments with an optical frequency standard based on a laser cooled Yb ion confined in a radiofrequency Paul trap. The electric-quadrupole transition fro…