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Mapping exchange in relativistic Hartree-Fock |
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| Authors: | A. Sulaksono J.A. Maruhn W. Greiner |
| Affiliation: | a Jurusan fisika, FMIPA, Universitas Indonesia, Depok 16424, Indonesia b Theoretical Division, MS B283, Los Alamos National Laboratory, T-16, Los Alamos, NM 87544, USA c Institut für Theoretische Physik, Universität Frankfurt, Robert-Mayer-Str. 10, D-60324 Frankfurt, Germany d Institut für Theoretische Physik II, Universität Erlangen-Nürnberg, Staudtstrasse 7, D-91058 Erlangen, Germany |
| Abstract: | We show that formally for the standard ansatz relativistic point-coupling mean-field (RMF-PC) model a Lagrangian density  is not equivalent in Hartree and Hartree-Fock approximations. The equivalency can be achieved only if we use a “complete” ansatz at the cost of introducing new parameters in the model. An approximate treatment of the exchange terms from standard RMF-PC indicates that these effects cannot be easily, if at all, absorbed by a Dirac-Hartree approximation. |
| Keywords: | Relativistic Hartree-Fock Relativistic mean-field model Finite nuclei |
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