430 citations · 1k across the 13 of their papers we have counts for
13 papers
Sub-part-per-trillion test of the Standard Model with atomic hydrogen
Lothar Maisenbacher, Vitaly Wirthl, Arthur Matveev +4
Quantum electrodynamics (QED), the first relativistic quantum field theory, describes light-matter interactions at a fundamental level and is one of the pillars of the Standard Mod…
Long-distance chronometric leveling with a portable optical clock
J. Grotti, I. Nosske, S. B. Koller +19
We have measured the geopotential difference between two locations separated by by comparison of two optical lattice clocks via an interferometric fiber link, uti…
Measurement of the SD transition in hydrogen
A. D. Brandt, S. F. Cooper, C. Rasor +3
We present a measurement of the hydrogen SD transition performed with a cryogenic atomic beam. The measured resonance frequency is kHz,…
Pressure Shifts in High-Precision Hydrogen Spectroscopy: I. Long-Range Atom-Atom and Atom-Molecule Interactions
U. D. Jentschura, C. M. Adhikari, R. Dawes +2
We study the theoretical foundations for the pressure shifts in high-precision atomic beam spectrosopy of hydrogen, with a particular emphasis on transitions involving higher excit…
Pressure Shifts in High-Precision Hydrogen Spectroscopy: II. Impact Approximation and Monte-Carlo Simulations
A. Matveev, N. Kolachevsky, C. M. Adhikari +1
We investigate collisional shifts of spectral lines involving excited hydrogenic states, where van der Waals coefficients have recently been shown to have large numerical values wh…
Long-range interactions of hydrogen atoms in excited states. II. Hyperfine-resolved 2S-2S system
U. D. Jentschura, V. Debierre, C. M. Adhikari +2
The interaction of two excited hydrogen atoms in metastable states constitutes a theoretically interesting problem because of the quasi-degenerate 2P_{1/2} levels which are removed…