135 citations · 152 across the 5 of their papers we have counts for
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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…
Atomic Clocks and Constraints on Variations of Fundamental Constants
Savely G. Karshenboim, Victor Flambaum, Ekkehard Peik
We consider an application of precision frequency measurements to searches for possible time variations of the fundamental physical constants. Current laboratory constraints on var…
Time and Space Variation of Fundamental Constants: Motivation and Laboratory Search
Savely G. Karshenboim
Fundamental physical constants play important role in modern physics. Studies of their variation can open an interface to new physics. An overview of different approaches to a sear…
Precision Optical Measurements and Fundamental Physical Constants
Savely G. Karshenboim
A brief overview is given on precision determinations of values of the fundamental physical constants and the search for their variation with time by means of precision spectroscop…
2s Hyperfine Structure in Hydrogen Atom and Helium-3 Ion
Savely G. Karshenboim
The usefulness of study of hyperfine splitting in the hydrogen atom is limited on a level of 10 ppm by our knowledge of the proton structure. One way to go beyond 10 ppm is to stud…
Laser spectroscopy of simple atoms and precision tests of bound state QED
Savely G. Karshenboim
We present a brief overview of precision tests of bound state QED and mainly pay our attention to laser spectroscopy as an appropriate tool for these tests. We particularly conside…