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Exact-exchange density functional theory for neutron drops

By Joaquín E. Drut and Lucas Platter

Abstract

We compute the ground-state properties of finite systems of neutrons in an external harmonic trap, interacting via the Minnesota potential, using the "exact-exchange" form of orbital-dependent density functional theory. We compare our results with Hartree-Fock calculations and find very close agreement. Within the context of the interaction studied, we conclude that this simple orbital-dependent functional brings conventional nuclear density functional theory to the level of Hartree-Fock in an ab initio fashion. Our work is a first step towards higher-order ab initio nuclear functionals based on realistic nucleon-nucleon interactions.Comment: 7 pages, 3 figures; replaced with published versio

Topics: Nuclear Theory, Physics - Chemical Physics
Year: 2011
DOI identifier: 10.1103/PhysRevC.84.014318
OAI identifier: oai:arXiv.org:1104.4357
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