Dual kinetic balance approach to basis-set expansions for the dirac equation |
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| Authors: | Shabaev V M Tupitsyn I I Yerokhin V A Plunien G Soff G |
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| Affiliation: | Department of Physics, St. Petersburg State University, Oulianovskaya 1, Petrodvorets, St. Petersburg 198504, Russia. |
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| Abstract: | A new approach to finite basis sets for the Dirac equation is developed. It does not involve spurious states and improves the convergence properties of basis-set calculations. Efficiency of the method is demonstrated for finite basis sets constructed from B splines by calculating the one-loop self-energy correction for a hydrogenlike ion. |
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