From the 1 of 9 linked papers with an AI index.
9 papers
Higher-order corrections to the field shift in atomic systems
V. A. Yerokhin, Z. Harman, C. H. Keitel
The paper develops a systematic expansion for higher-order contributions to the field shift in atomic spectra, validates it with numerical calculations for hydrogen-like ions, and…
Fermion selective tests of new physics with the bound electron g-factor
Matteo Moretti, Christoph H. Keitel, Zoltán Harman
The use of high-precision measurements of the factor of single-electron ions is considered as a detailed probe for physics beyond the Standard Model. The contribution of the ex…
Two-loop vacuum polarization in a Coulomb field
S. A. Volkov, V. A. Yerokhin, Z. Harman +1
The leading-order two-loop vacuum-polarization potential, linear in the Coulomb field of a nucleus, was first derived in the seminal 1955 work of Källén-Sabry. The higher-order t…
Two-loop electron self-energy in bound-electron factor: diagrams in momentum-coordinate representation
V. A. Yerokhin, B. Sikora, Z. Harman +1
The two-loop electron self-energy correction is one of the most problematic QED effects and, for a long time, was the dominant source of uncertainty in the theoretical prediction o…
QED calculations of the - transition energies in Li-like ions
V. A. Yerokhin, Z. Harman, C. H. Keitel
Systematic QED calculations of ionization energies of the , , and states, as well as the -- and -- transition energies ar…
Factor of Boron-like Tin
J. Morgner, B. Tu, M. Moretti +10
In the ALPHATRAP experiment, the factor of boron-like has been measured with a parts-per-billion uncertainty. This is the first high-precision m…