Examination of accuracy of electron–electron Coulomb interactions in two-component relativistic methods

Relativistic regular two-component Hamiltonians

Erik van Lenthe, Evert Jan Baerends, J. G. Snijders · The Journal of Chemical Physics · 1993 · 4.3K citations

Hamiltonian Theory, Quantum Science, Engineering +14

Quantum electrodynamical corrections to the fine structure of helium

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

Quantum Science, Engineering, Physics +4

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

Engineering, Many-body Quantum Physic, Silver Atoms +20

On the Dirac Theory of Spin 1/2 Particles and Its Non-Relativistic Limit

L. L. Foldy, S. A. Wouthuysen · Physical Review · 1950 · 2.1K citations

Spectral Theory, Dirac Hamiltonian, Non-relativistic Limit +14

<i>Methods of Molecular Quantum Mechanics</i>

R. McWeeny, Brian T. Sutcliffe, G. O. Brink · Physics Today · 1971 · 1.6K citations

Quantum Dynamic, Quantum Science, Engineering +13