23 citations · 123 across the 17 of their papers we have counts for
11 papers · 1 filter
A passive atomtronics filter for Fermi gases
Jun Hao Hue, Martin-Isbjörn Trappe, Piotr T. Grochowski +2
We design an atomtronic filter device that spatially separates the components of a two-component Fermi gas with repulsive contact interactions in a two-dimensional geometry. With t…
Phase separation of a repulsive two-component Fermi gas at the two- to three-dimensional crossover
Piotr T. Grochowski, Martin-Isbjörn Trappe, Tomasz Karpiuk +1
We present a theoretical analysis of phase separations between two repulsively interacting components in an ultracold fermionic gas, occurring at the dimensional crossover in a har…
Single-particle-exact density functional theory
Martin-Isbjörn Trappe, Jun Hao Hue, Jonah Huang Zi Chao +4
We introduce 'single-particle-exact density functional theory' (1pEx-DFT), a novel density functional approach that represents all single-particle contributions to the energy with…
Energy functionals of single-particle densities: A unified view
Berthold-Georg Englert, Jun Hao Hue, Zi Chao Huang +2
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 dens…
Density-potential functional theory for fermions in one dimension
Martin-Isbjörn Trappe, Jun Hao Hue, Berthold-Georg Englert
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…
Phase Transitions of Repulsive Two-Component Fermi Gases in Two Dimensions
Martin-Isbjörn Trappe, Piotr T. Grochowski, Jun Hao Hue +2
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 corrections to the Thomas-Fermi approximation without a gradient expansion
Thanh Tri Chau, Jun Hao Hue, Martin-Isbjörn Trappe +1
We improve on the Thomas-Fermi approximation for the single-particle density of fermions by introducing inhomogeneity corrections. Rather than invoking a gradient expansion, we rel…
Airy-averaged gradient corrections for two-dimensional fermion gases
Martin-Isbjörn Trappe, Yink Loong Len, Hui Khoon Ng +1
Building on the discussion in PRA 93, 042510 (2016), we present a systematic derivation of gradient corrections to the kinetic-energy functional and the one-particle density, in pa…
Leading gradient correction to the kinetic energy for two-dimensional fermion gases
Martin-Isbjörn Trappe, Yink Loong Len, Hui Khoon Ng +2
Density functional theory (DFT) is notorious for the absence of gradient corrections to the two-dimensional (2D) Thomas-Fermi kinetic-energy functional; it is widely accepted that…
Ground-state densities of repulsive two-component Fermi gases
M. I. Trappe, P. Grochowski, M. Brewczyk +1
We investigate separations of trapped balanced two-component atomic Fermi gases with repulsive contact interaction. Candidates for ground-state densities are obtained from the imag…
Semiclassical spectral function for matter waves in random potentials
Martin-Isbjörn Trappe, Dominique Delande, Cord A. Müller
An -expansion is presented for the ensemble-averaged spectral function of noninteracting matter waves in random potentials. We obtain the leading quantum corrections to the…