Density Matrix Expansion for Low-Momentum Interactions
arXiv:0811.4198 · doi:10.1140/epja/i2008-10695-1
Abstract
A first step toward a universal nuclear energy density functional based on low-momentum interactions is taken using the density matrix expansion (DME) of Negele and Vautherin. The DME is adapted for non-local momentum-space potentials and generalized to include local three-body interactions. Different prescriptions for the three-body DME are compared. Exploratory results are given at the Hartree-Fock level, along with a roadmap for systematic improvements within an effective action framework for Kohn-Sham density functional theory.
50 pages, 10 figures
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