402 citations · 2.3k across the 85 of their papers we have counts for
14 papers · 1 filter
The effect of population imbalance on the Berezinskii-Kosterlitz-Thouless phase transition in a superfluid Fermi gas
J. Tempere, S. N. Klimin, J. T. Devreese
The Berezinskii-Kosterlitz-Thouless (BKT) mechanism describes the breakdown of superfluidity in a two-dimensional Bose gas or a two-dimensional gas of paired fermions. In the latte…
Froehlich Polarons From 3D to 0D. Concepts and Recent Developments
J. T. Devreese
An overview is presented of the fundamentals of continuum-polaron physics, which provide the basis of the analysis of polaron effects in ionic crystals and polar semiconductors. Th…
Use of the chemical potential for a limited number of fermions with a degenerate groundstate
L. F. Lemmens, F. Brosens, J. T. Devreese
For fermions with degenerate single-particle energy levels, the usual relation between the total number of particles and the chemical potential is only satisfied for a specific…
Density of a gas of spin polarized fermions in a magnetic field
S. Foulon, F. Brosens, J. T. Devreese +1
For a fermion gas with equally spaced energy levels that is subjected to a magnetic field, the particle density is calculated. The derivation is based on the path integral approach…
Addendum on rotational properties of confined bosons: time-inversion referencing
F. Brosens, J. T. Devreese, L. F. Lemmens
In this addendum we introduce the concept of time-inversion referencing. This is an extension of hypertext allowing authors to cite papers that where not yet published (or even not…
Comment on: rotational properties of trapped bosons
F. Brosens, J. T. Devreese, L. F. Lemmens
Based on the Hellman-Feynman theorem it is shown that the average square radius of a cloud of interacting bosons in a parabolic well can be derived from their free energy. As an ap…
The center-of-mass response of confined systems
L. F. Lemmens, F. Brosens, J. T. Devreese
For confined systems of identical particles, either bosons or fermions, we argue that the parabolic nature of the confinement potential is a prerequisite for the non-dissipative ch…
Confined Harmonically Interacting Spin-Polarized Fermions in a Magnetic Field: Thermodynamics
S. Foulon, F. Brosens, J. T. Devreese +1
We investigate the combined influence of a magnetic field and a harmonic interparticle interaction on the thermodynamic properties of a finite number of spin polarized fermions in…
Correlations in a Confined gas of Harmonically Interacting Spin-Polarized Fermions
F. Brosens, J. T. Devreese, L. F. Lemmens
For a fermion gas with equally spaced energy levels, the density and the pair correlation function are obtained. The derivation is based on the path integral approach for identical…
Switching Boundary Conditions in the Many-Body Diffusion Algorithm
F. Luczak, F. Brosens, J. T. Devreese +1
In this paper we show how the transposition, the basic operation of the permutation group, can be taken into account in a diffusion process of identical particles. Whereas in an ea…
Statistical mechanics and path integrals for a finite number of bosons
L. F. Lemmens, F. Brosens, J. T. Devreese
Recent investigations show that the statistical mechanics of a finite number of particles in ideal harmonic systems predicts different results for the same physical properties, dep…
The many-body diffusion algorithm, harmonic fermions
F. Luczak, F. Brosens, J. T. Devreese +1
A numerical implementation scheme is presented for the recently developed many-body diffusion approach for identical particles, in the case of harmonic potentials. The procedure is…
Confined Harmonically Interacting Spin-Polarised Fermions
F. Brosens, J. T. Devreese, L. F. Lemmens
The thermodynamical properties are calculated for a three-dimensional model of harmonically interacting spin-polarized fermions in a parabolic potential well. The obtained depe…
Density and Pair Correlation Function of Confined Identical Particles: the Bose-Einstein Case
F. Brosens, J. T. Devreese, L. F. Lemmens
Two basic correlation functions are calculated for a model of harmonically interacting identical particles in a parabolic potential well. The density and the pair correlation f…