Exact and LDA entanglement of tailored densities in an interacting one-dimensional electron system

Details Exact and LDA entanglement of tailored densities in an interacting one-dimensional electron system Exact and LDA entanglement of tailored densities in an interacting one-dimensional electron system

2009-05-28

arxiv.org/abs/0905.4645v1

J. Phys.: Conf. Ser. 200, 062003 (2010)

Physics

Condensed Matter

Other Condensed Matter

7 pages, 4 figures

Scientific paper

We calculate the `exact' potential corresponding to a one-dimensional interacting system of two electrons with a specific, tailored density. We use one-dimensional density-functional theory with a local-density approximation (LDA) on the same system and calculate densities and energies, which are compared with the `exact' ones. The `interacting-LDA system' corresponding to the LDA density is then found and its potential compared with the original one. Finally we calculate and compare the spatial entanglement of the electronic systems corresponding to the interacting-LDA and original interacting system.

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