QED corrections to singlet levels of the helium atom: A complete set of effective operators to mα6
Year: 2001
Type: article
Abstract: Using singlet S states of the helium atom as an example, precise calculation of energy levels in few-electron atoms is described. In particular, a complete set of effective operators is derived, which generates $O(m{\ensuremath{\alpha}}^{6})$ relativistic and radiative corrections to the Schr\"odinger energy. Average values of these operators can be calculated using a variational Schr\"odinger wave function.
Source: Physical Review A
Author: Alexander Yelkhovsky
Institution: Budker Institute of Nuclear Physics
Language: Latvian
Topic: Atomic and Molecular Physics
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1879004420