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arXiv · 1003.2543

Convergence of density-matrix expansions for nuclear interactions

B. G. Carlsson·J. Dobaczewski
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Abstract

We extend density-matrix expansions in nuclei to higher orders in derivatives of densities and test their convergence properties. The expansions allow for converting the interaction energies characteristic to finite- and short-range nuclear effective forces into quasi-local density functionals. We also propose a new type of expansion that has excellent convergence properties when benchmarked against the binding energies obtained for the Gogny interaction.

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B. G. Carlsson, J. Dobaczewski. 2010-03-12. Convergence of density-matrix expansions for nuclear interactions. https://doi.org/10.1103/physrevlett.105.122501

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