activity
20162026
most citedHigher-order recoil corrections for singlet states of the helium atom

39 citations · 41 across the 11 of their papers we have counts for

collaborators

12 papers

physics.atom-ph2026

Hydrogenic rotational levels with spin-0 or spin-1/2 constituent particles

Vojtěch Patkóš, Mateusz Pańtak, Krzysztof Pachucki

We employ nonrelativistic quantum electrodynamics with a unified description of two-body systems with spin-0 or spin-1/2 constituents, arbitrary masses, and arbitrary magnetic mome…

physics.atom-ph2026

Recoil corrections to H hyperfine splitting

Andrzej Maroń, Mateusz Pańtak, Krzysztof Pachucki

This work attempts to present a complete theory of the H hyperfine splitting, including all contributions above 1 ppm. Quantum electrodynamic and recoil corrections are calculat…

physics.atom-ph2026

Relativistic nuclear recoil effects in hyperfine splitting of hydrogenic systems

Jakub Hevler, Andrzej Maroń, Krzysztof Pachucki

Finite nuclear mass corrections to the hyperfine splitting in hydrogenic systems are calculated using a combined relativistic heavy particle and nonrelativisti…

physics.atom-ph2025★ 1 cited

QED nuclear recoil effect in helium isotope shift

Krzysztof Pachucki, Vojtěch Patkóš, Vladimir A. Yerokhin

We present a detailed investigation of the leading-order QED correction with inclusion of the finite-nuclear-mass effects. Previously, this correction had been calculated wi…

physics.atom-ph2025

Nonadiabatic corrections to electric quadrupole transition rates in H

Krzysztof Pachucki, Michał Siłkowski

We derive formulas and perform calculations of nonadiabatic corrections to rates of electric quadrupole transitions in the hydrogen molecule. These corrections can be represented i…

physics.atom-ph2025

Antiprotonic atoms with nonperturbative inclusion of vacuum polarization and finite nuclear mass

V. Patkóš, K. Pachucki

We demonstrate that energy levels of excited states in a hydrogenic system consisting of an arbitrary nucleus and an antiproton can be calculated within the framework of nonrelativ…