The Perturbation Theory of Electron Correlation. III. Relativistic Many-Body Perturbation Theory

摘要: For systems which contain heavy atoms, the non-relativistic quantum mechanics on almost all contemporary treatments of electron correlation are based, is inadequate because mean speed core electrons a substantial fraction light, so that fully relativistic electronic structure theory required. The proper treatment relativity and electrodynamic effects will demand increasing attention in years ahead, since these may be more important than elements thus an essential ingredient ab initio studies for lower rows Periodic Table. A great deal research over past decade has been directed towards development many-body perturbation formulated within algebraic approximation. Problems principle have largely resolved remaining problems primarily computational nature.