# Density-potential functional theory for fermions in one dimension

@inproceedings{Trappe2021DensitypotentialFT, title={Density-potential functional theory for fermions in one dimension}, author={Martin Trappe and Jun Hao Hue and Berthold-Georg Englert}, year={2021} }

We showcase the advantages of orbital-free density-potential functional theory (DPFT), a more flexible variant of Hohenberg–Kohn density functional theory. DPFT resolves the usual trouble with the gradientexpanded kinetic energy functional by facilitating systematic semiclassical approximations in terms of an effective potential energy that incorporates all interactions. With the aid of two systematic approximation schemes we demonstrate that DPFT is not only scalable, universally applicable in…

## 3 Citations

Phase transitions of repulsive two-component Fermi gases in two dimensions

- PhysicsNew Journal of Physics
- 2021

We predict the phase separations of two-dimensional Fermi gases with repulsive contact-type interactions between two spin components. Using density-potential functional theory with systematic…

Fourth-order leapfrog algorithms for numerical time evolution of classical and quantum systems

- Physics
- 2020

Chau et al. [New J. Phys. 20, 073003 (2018)] presented a new and straight-forward derivation of a fourth-order approximation '$U_7$' of the time-evolution operator and hinted at its potential value…

Energy functionals of single-particle densities: A unified view

- Materials Science
- 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…

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