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Title: Density matrix functional theory that includes pairing correlations
Author: Krewald, S.
Soubbotin, V. B.
Tselyaev, V. I.
Viñas Gausí, Xavier
Keywords: Física nuclear
Teoria del funcional de densitat
Nuclear physics
Density functional theory
Issue Date: 2006
Publisher: The American Physical Society
Abstract: The extension of density functional theory (DFT) to include pairing correlations without formal violation of the particle-number conservation condition is described. This version of the theory can be considered as a foundation of the application of existing DFT plus pairing approaches to atoms, molecules, ultracooled and magnetically trapped atomic Fermi gases, and atomic nuclei where the number of particles is conserved exactly. The connection with Hartree-Fock-Bogoliubov (HFB) theory is discussed, and the method of quasilocal reduction of the nonlocal theory is also described. This quasilocal reduction allows equations of motion to be obtained which are much simpler for numerical solution than the equations corresponding to the nonlocal case. Our theory is applied to the study of some even Sn isotopes, and the results are compared with those obtained in the standard HFB theory and with the experimental ones.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i
It is part of: Physical Review C, 2006, vol. 74, núm. 6, p. 064310-1-064310-12
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ISSN: 0556-2813
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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