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Density Matrix Expansion for Low-Momentum Interactions

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arxiv 0811.4198 v1 pith:BJMAXMQT submitted 2008-11-26 nucl-th cond-mat.other

S.K. Bogner , R.J. Furnstahl , L. Platter This is my paper · ORCID
classification nucl-thcond-mat.other
keywords densityinteractionsexpansionfunctionallow-momentummatrixthree-bodyaction
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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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  1. A nuclear mass model rooted in chiral effective field theory

    nucl-th 2025-04 conditional novelty 6.0 of 10

    A Hartree-Fock model with 11 chiral low-energy constants fitted to 18 nuclei reaches 3.5 MeV RMS on 107 even-even nuclei, worse than a liquid-drop fit to the same data.

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