Concepedia

Revision of the Douglas-Kroll transformation

Georg Jansen, Bernd A. Heß

Physical review. A, General physics · 1989 · 932 citations · 3 references

DOI

Concepts

Abstract

A revision of the Douglas-Kroll transformation showed that the sign of the second-order term in the resulting transformed Dirac Hamiltonian has to be changed. This is in accordance with its use in practical applications. A brief review of the theory is given and a slight simplification of the second-order term is presented.

References

3

Quantum electrodynamical corrections to the fine structure of helium

Marvin Douglas, N. Kroll · Annals of Physics · 1974 · 2.9K citations

, , +10

Relativistic electronic-structure calculations employing a two-component no-pair formalism with external-field projection operators

Bernd A. Heß · Physical review. A, General physics · 1986 · 2.5K citations

, , +17

Relativistic<i>ab initio</i>CI study of the<i>X</i><sup>1</sup>Σ<sup>+</sup>and<i>A</i><sup>1</sup>Σ<sup>+</sup>states of the AgH molecule

Bernd A. Heß, Peeyush Chandra · Physica Scripta · 1987 · 91 citations

, , +17