Density Matrix Functional Theory with account of pairing correlations

Details Density Matrix Functional Theory with account of pairing correlations Density Matrix Functional Theory with account of pairing correlations

2004-12-06

arxiv.org/abs/nucl-th/0412018v1

Physics

Nuclear Physics

Nuclear Theory

17 pages, LaTeX

Scientific paper

The extension of the 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 exactly conserved. The connection with the Hartree-Fock-Bogoliubov theory is discussed. The method of the quasilocal reduction of the nonlocal theory is described. This quasilocal reduction allows to obtain equations of motion which are much more simple for the numerical solution than the equations corresponding to the nonlocal case.

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