Bonn 2020 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 46: Structure and Dynamics of Nuclei IX
HK 46.4: Talk
Thursday, April 2, 2020, 15:00–15:15, J-HS H
Exploring density-matrix expansions for local chiral interactions — •Lars Zurek1,2, Eduardo A. Coello Pérez3, Scott K. Bogner4, Richard J. Furnstahl5, and Achim Schwenk1,2,6 — 1Institut für Kernphysik, Technische Universität Darmstadt — 2ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt — 3Lawrence Livermore National Laboratory, Livermore, CA, USA — 4Facility for Rare Isotope Beams and Department of Physics and Astronomy, Michigan State University, East Lansing, MI, USA — 5Department of Physics, The Ohio State University, Columbus, OH, USA — 6Max-Planck-Institut für Kernphysik, Heidelberg
We employ the density-matrix expansion originally introduced by Negele and Vautherin in order to rewrite one-body density matrices in terms of local densities and their derivatives. The resulting approximations for the density matrices are applied to calculate energy-density functionals at the Hartree-Fock level based on local interactions derived from chiral effective field theory. The accuracy of this approach is investigated and analyzed for various approximations and choices in the scalar density-matrix expansion.
* Funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - Projektnummer 279384907 - SFB 1245 and the BMBF under Contract No. 05P18RDFN1.