Zobrazeno 1 - 10
of 503
pro vyhledávání: '"Pachucki K"'
Publikováno v:
Rev. Mod. Pays. 96, 015001 (2024)
A comprehensive theory of the Lamb shift in light muonic atoms such as $\mu$H, $\mu$D, $\mu^3$He$^+$, and $\mu^4$He$^+$ is presented, with all quantum electrodynamic corrections included at the precision level constrained by the uncertainty of nuclea
Externí odkaz:
http://arxiv.org/abs/2212.13782
Publikováno v:
Phys. Rev. A 102, 022815 (2020)
We report an investigation of the self-energy screening effects for the $g$ factor of the ground state of Li-like ions. The leading screening contribution of the relative order $1/Z$ is calculated to all orders in the binding nuclear strength paramet
Externí odkaz:
http://arxiv.org/abs/2006.08284
Publikováno v:
2019, A&A, 630, A58
The high spectral resolution R about 45,000 provided by IGRINS (Immersion Grating INfrared Spectrometer) at MacDonald Observatory and R 100,000 achieved by CRIRES (CRyogenic high-resolution InfraRed Echelle Spectrograph) at VLT (Very Large Telescope)
Externí odkaz:
http://arxiv.org/abs/1909.11585
Publikováno v:
Phys. Rev. Lett. 122, 103003 (2019)
The quantum electrodynamic correction to the energy of the hydrogen molecule has been evaluated without expansion in the electron-proton mass ratio. The obtained results significantly improve the accuracy of theoretical predictions reaching the level
Externí odkaz:
http://arxiv.org/abs/1812.02980
Publikováno v:
Phys. Rev. Lett. 120, 153001 (2018)
Precision spectroscopy of the hydrogen molecule is a test ground of quantum electrodynamics (QED), and may serve for determination of fundamental constants. Using a comb-locked cavity ring-down spectrometer, for the first time, we observed the Lamb-d
Externí odkaz:
http://arxiv.org/abs/1712.08705
Publikováno v:
Phys. Rev. A 95, 062511 (2017)
We investigate electron-correlation effects in the $g$-factor of the ground state of Li-like ions. Our calculations are performed within the nonrelativistic quantum electrodynamics (NRQED) expansion up to two leading orders in the fine-structure cons
Externí odkaz:
http://arxiv.org/abs/1705.04476
Publikováno v:
Phys. Rev. A 95, 012508 (2017)
We investigate the finite nuclear mass corrections in the helium atom in order to resolve a significant disagreement between the $2^3S - 2^3P$ and $2^3S - 2^1S$ transition isotope shifts. These two transitions lead to discrepant results for the nucle
Externí odkaz:
http://arxiv.org/abs/1612.06142
Publikováno v:
Phys. Rev. A 94, 052508 (2016)
Nuclear recoil corrections of order $\alpha^6\,m^2/M$ are calculated for the lowest-lying triplet states of the helium atom. It improves the theoretical prediction for the isotope shift of the $2^3S-2^3P$ transition energy and influences the determin
Externí odkaz:
http://arxiv.org/abs/1610.04060
Publikováno v:
published in Phys. Rev. C 92, 044305 (2015)
A novel theory of radiative electron capture in second forbidden non-unique transition, is applied to reanalyze experimental data obtained previously for the decay of 59Ni. The measured gamma spectrum is shown to be distorted at the high-energy end,
Externí odkaz:
http://arxiv.org/abs/1510.03310
Autor:
Jentschura, U. D., Pachucki, K.
Publikováno v:
Eur.Phys.J.D 69 (2015) 118
The dynamic atomic polarizability describes the response of the atom to incoming electromagnetic radiation. The functional form of the imaginary part of the polarizability for small driving frequencies omega has been a matter of long-standing discuss
Externí odkaz:
http://arxiv.org/abs/1504.05179