Higher-order effective Hamiltonian for light atomic systems
- 19 January 2005
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 71 (1) , 012503
- https://doi.org/10.1103/physreva.71.012503
Abstract
We present the derivation of the effective higher-order Hamiltonian, which gives an contribution to the energy levels of an arbitrary light atom. The derivation is based on the Foldy-Wouthuysen transformation of the one-particle Dirac Hamiltonian followed by perturbative expansion of the many-particle Green function. The obtained results can be used for the high precision calculation of relativistic effects in atomic systems.
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