Density Matrix Expansion for Low-Momentum Interactions

Details Density Matrix Expansion for Low-Momentum Interactions Density Matrix Expansion for Low-Momentum Interactions

2008-11-26

arxiv.org/abs/0811.4198v1

Physics

Nuclear Physics

Nuclear Theory

50 pages, 10 figures

Scientific paper

10.1140/epja/i2008-10695-1

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.

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