58 citations · 231 across the 10 of their papers we have counts for
10 papers
Hadronic vacuum polarization correction to atomic energy levels
Sören Breidenbach, Eugen Dizer, Halil Cakir +1
The shift of atomic energy levels due to hadronic vacuum polarization is evaluated in a semiempirical way for hydrogenlike ions and for muonic hydrogen. A parametric hadronic polar…
Mass-difference measurements on heavy nuclides with at an eV/c2 accuracy level with PENTATRAP
A. Rischka, H. Cakir, M. Door +13
First ever measurements of the ratios of free cyclotron frequencies of heavy highly charged ions with Z>50 with relative uncertainties close to 1e-11 are presented. Such accurate m…
Two-loop virtual light-by-light scattering corrections to the bound-electron factor
V. Debierre, B. Sikora, H. Cakir +4
A critical set of two-loop QED corrections to the factor of hydrogenlike ions is calculated without expansion in the nuclear binding field. These corrections are due to the pol…
Improved access to the fine-structure constant with the simplest atomic systems
H. Cakir, N. S. Oreshkina, I. A. Valuev +4
A means to extract the fine-structure constant from precision spectroscopic data on one-electron ions is presented. We show that in an appropriately weighted difference of the…
Detection of metastable electronic states by Penning trap mass spectrometry
Rima Xenia Schüssler, Hendrik Bekker, Martin Braß +19
State-of-the-art optical clocks achieve fractional precisions of and below using ensembles of atoms in optical lattices or individual ions in radio-frequency traps. Prom…
QED corrections to the factor of Li- and B-like ions
H. Cakir, V. A. Yerokhin, N. S. Oreshkina +4
QED corrections to the factor of Li-like and B-like ions in a wide range of nuclear charges are presented. Many-electron contributions as well as radiative effects on the one-l…
-factor of Boronlike Argon
I. Arapoglou, A. Egl, M. Höcker +15
We have measured the ground-state -factor of boronlike argon with a fractional uncertainty of \SI{1.4e-9}{} with a single ion in the newly developed ALP…
Theory of the two-loop self-energy correction to the factor in non-perturbative Coulomb fields
B. Sikora, V. A. Yerokhin, N. S. Oreshkina +3
Two-loop self-energy corrections to the bound-electron factor are investigated theoretically to all orders in the nuclear binding strength parameter . The separation of div…
Access to improve the muon mass and magnetic moment anomaly via the bound-muon factor
B. Sikora, H. Cakir, N. Michel +6
A theoretical description of the factor of a muon bound in a nuclear potential is presented. One-loop self-energy and multi-loop vacuum polarization corrections are calculated,…
Universal equilibrium scaling functions at short times after a quench
Markus Karl, Halil Cakir, Jad C. Halimeh +3
By analyzing spin-spin correlation functions at relatively short distances, we show that equilibrium near-critical properties can be extracted at short times after quenches into th…