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Bound-state relativistic quantum electrodynamics: A perspective for precision physics with atoms and molecules
Precision physics aims to use atoms and molecules to test and develop the fundamental
theory of matter, possibly beyond the Standard Model. Most of the atomic and molecular …
theory of matter, possibly beyond the Standard Model. Most of the atomic and molecular …
Penning-trap measurement of the Q value of electron capture in 163Ho for the determination of the electron neutrino mass
The investigation of the absolute scale of the effective neutrino mass remains challenging
due to the exclusively weak interaction of neutrinos with all known particles in the standard …
due to the exclusively weak interaction of neutrinos with all known particles in the standard …
Improved Isotope-Shift-Based Bounds on Bosons beyond the Standard Model through Measurements of the Interval in
We perform high-resolution spectroscopy of the 3 d D 2 3/2-3 d D 2 5/2 interval in all stable
even isotopes of Ca A+(A= 40, 42, 44, 46, and 48) with an accuracy of∼ 20 Hz using direct …
even isotopes of Ca A+(A= 40, 42, 44, 46, and 48) with an accuracy of∼ 20 Hz using direct …
Perspectives on testing fundamental physics with highly charged ions in Penning traps
In Penning traps electromagnetic forces are used to confine charged particles under well-
controlled conditions for virtually unlimited time. Sensitive detection methods have been …
controlled conditions for virtually unlimited time. Sensitive detection methods have been …
Direct -Value Determination of the Decay of
The cyclotron frequency ratio of Os 187 29+ to Re 187 29+ ions was measured with the
Penning-trap mass spectrometer PENTATRAP. The achieved result of R= 1.000 000 013 …
Penning-trap mass spectrometer PENTATRAP. The achieved result of R= 1.000 000 013 …
High-precision mass measurement of doubly magic Pb
The absolute atomic mass of 208 Pb has been determined with a fractional uncertainty of 7×
10-11 by measuring the cyclotron-frequency ratio R of 208 Pb 41+ to 132 Xe 26+ with the …
10-11 by measuring the cyclotron-frequency ratio R of 208 Pb 41+ to 132 Xe 26+ with the …
Observation of a low-lying metastable electronic state in highly charged lead by Penning-trap mass spectrometry
Highly charged ions (HCIs) offer many opportunities for next-generation clock research due
to the vast landscape of available electronic transitions in different charge states. The …
to the vast landscape of available electronic transitions in different charge states. The …
High-Precision Determination of Factors and Masses of and
We present the measurements of individual bound electron g factors of Ne 20 9+ and Ne 22
9+ on the relative level of 0.1 parts per billion. The comparison with theory represents the …
9+ on the relative level of 0.1 parts per billion. The comparison with theory represents the …
[HTML][HTML] Fifth-force search with the bound-electron g factor
The use of high-precision measurements of the g factor of few-electron ions and its isotope
shifts is put forward as a probe for physics beyond the Standard Model. The contribution of a …
shifts is put forward as a probe for physics beyond the Standard Model. The contribution of a …
QED corrections to the correlated relativistic energy: One-photon processes
This work is a collection of initial calculations and formal considerations within the Salpeter–
Sucher exact equal-time relativistic quantum electrodynamics framework. The calculations …
Sucher exact equal-time relativistic quantum electrodynamics framework. The calculations …