Convergence of density-matrix expansions for nuclear interactions

Details Convergence of density-matrix expansions for nuclear interactions Convergence of density-matrix expansions for nuclear interactions

2010-03-12

arxiv.org/abs/1003.2543v1

Phys.Rev.Lett.105:122501,2010

Physics

Nuclear Physics

Nuclear Theory

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.105.122501

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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