The formalism of quantum electrodynamics for treating the interelectronic-interaction correction of first order in 1/Z to the two-electron part of the nuclear recoil effect on binding energies in atoms and ions is developed. The nonperturbative (in αZ) calculations of the corresponding contribution to the energies of the 1s2 state in He-like and the 1s22s and 1s22p1/2 states in Li-like ions are performed in the range Z=5-100. The behavior of the two-electron part of the nuclear recoil effect beyond the lowest-order relativistic approximation as a function of Z is studied.

Original languageEnglish
Article number012510
Number of pages12
JournalPhysical Review A
Volume100
Issue number1
DOIs
StatePublished - 16 Jul 2019

    Research areas

  • NUCLEAR RECOIL CORRECTIONS, LITHIUM-LIKE ATOMS, ENERGY-LEVELS, QUANTUM ELECTRODYNAMICS, ISOTOPE SHIFTS, STATE ENERGY, HYDROGENLIKE, ORDERS, IONS

    Scopus subject areas

  • Atomic and Molecular Physics, and Optics

ID: 44034389