Energy functionals of single-particle densities: A unified view

• URL: http://arxiv.org/abs/2206.10097v2
• Date: Thu, 23 Jun 2022 06:12:58 GMT
• Title: Energy functionals of single-particle densities: A unified view
• Authors: Berthold-Georg Englert, Jun Hao Hue, Zi Chao Huang, Miko{\l}aj M. Paraniak, and Martin-Isbj\"orn Trappe
• Abstract summary: Density functional theory is usually formulated in terms of the density in configuration space. We offer a unified view from a second-quantized perspective and introduce a version of density functional theory that treats all single-particle contributions to the energy exactly.
• Score: 0.6606016007748989
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Density functional theory is usually formulated in terms of the density in configuration space. Functionals of the momentum-space density have also been studied, and yet other densities could be considered. We offer a unified view from a second-quantized perspective and introduce a version of density functional theory that treats all single-particle contributions to the energy exactly. An appendix deals with semiclassical eigenvalues.

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