QED theory of multiphoton transitions in atoms and ions
Abstract
This review surveys the quantum theory of electromagnetic radiation for atomic systems. In particular, a review of current theoretical studies of multiphoton processes in one and two-electron atoms and highly charged ions is provided. Grounded on the quantum electrodynamics description the multiphoton transitions in presence of cascades, spin-statistic behaviour of equivalent photons and influence of external electric fields on multiphoton in atoms and anti-atoms are discussed. Finally, the nonresonant corrections which define the validity of the concept of the excited state energy levels are introduced.
- Publication:
-
Physics Reports
- Pub Date:
- March 2018
- DOI:
- 10.1016/j.physrep.2018.02.003
- Bibcode:
- 2018PhR...737....1Z
- Keywords:
-
- Quantum electrodynamics;
- Quantum electrodynamics corrections;
- Highly charged ions;
- Spectral line profiles;
- Two-photon transitions;
- Three-photon transitions;
- Hydrogen atom;
- Helium atom;
- Transition amplitude;
- Nonresonant correction;
- Quantum interference