# Energy functionals of single-particle densities: A unified view

@inproceedings{Englert2022EnergyFO, title={Energy functionals of single-particle densities: A unified view}, author={Berthold-Georg Englert and Jun Hao Hue and Zichang Huang and Mikolaj M. Paraniak and Martin Trappe}, year={2022} }

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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