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Cited by 4,385

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Relativistic regular two-component Hamiltonians

Lenthe, E. van, Baerends, E. J., Snijders, J. G.·1993·The Journal of Chemical Physics

Abstract

In this paper, potential-dependent transformations are used to transform the four-component Dirac Hamiltonian to effective two-component regular Hamiltonians. To zeroth order, the expansions give second order differential equations (just like the Schrödinger equation), which already contain the most important relativistic effects, including spin–orbit coupling. One of the zero order Hamiltonians is identical to the one obtained earlier by Chang, Pelissier, and Durand [Phys. Scr. 34, 394 (1986)]. Self-consistent all-electron and frozen-core calculations are performed as well as first order perturbation calculations for the case of the uranium atom using these Hamiltonians. They give very accurate results, especially for the one-electron energies and densities of the valence orbitals.

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Metadata

Authors
Lenthe, E. V., Baerends, E. J., & Snijders, J. G.
Venue
The Journal of Chemical Physics
Published
1993-09-15
Volume
99
Issue
6
Pages
4597-4610
ISSN
  • 0021-9606 (ISSN-L)
  • 1089-7690
OpenAlex
W2095374362
Cited by
4,385
References
1
FWCI
7.61
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Relativistic regular two-component Hamiltonians. https://app.cochat.ai/papers/10.1063/1.466059
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Lenthe, E. V., Baerends, E. J., & Snijders, J. G. (1993). Relativistic regular two-component Hamiltonians. The Journal of Chemical Physics. https://doi.org/10.1063/1.466059

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