2021
DOI: 10.48550/arxiv.2110.06647
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On the Breit interaction in an explicitly correlated variational Dirac-Coulomb framework

Dávid Ferenc,
Péter Jeszenszki,
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Abstract: The Breit interaction is implemented in the no-pair variational Dirac-Coulomb (DC) framework using an explicitly correlated Gaussian basis reported in the previous paper [P. Jeszenszki, D. Ferenc, and E. Mátyus, XXX (2021)]. Both a perturbative and a fully variational inclusion of the Breit term is considered. The no-pair DC plus perturbative Breit as well as the no-pair Dirac-Coulomb-Breit (DCB) energies are compared with perturbation theory results including the Breit-Pauli Hamiltonian and leading-order non… Show more

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