3 papers
hep-th2022
Calculations of Delbrück scattering to all orders in
J. Sommerfeldt, V. A. Yerokhin, R. A. Müller +3
We present a theoretical method to calculate Delbrück scattering amplitudes. Our formalism is based on the exact analytical Dirac-Coulomb Green's function and, therefore, accounts…
physics.atom-ph2020
Vacuum polarization and finite nuclear size effects in the two-photon decay of hydrogen-like ions
J. Sommerfeldt, R. A. Müller, A. V. Volotka +2
The total two-photon decay rate of hydrogen-like ions is studied using relativistic quantum electrodynamics. In particular, we analyse how finite nuclear size and QED vacuum polari…
physics.atom-ph2019
Polarization effects in bound-free pair production
J. Sommerfeldt, R. A. Müller, A. N. Artemyev +1
We present a theoretical study of bound-free electron-positron pair production in the interaction of -rays with bare ions. Special attention is paid to the longitudinal polariza…