226 citations · 2.1k across the 114 of their papers we have counts for
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Contact potential instability in the path-integral description of itinerant ferromagnetism
E. Vermeyen, J. Tempere
It has long been predicted that a two-component non-localized Fermi gas will exhibit spontaneous polarization for sufficiently strong repulsive interactions, a phenomenon which is…
Phase correlations and quasicondensate in a two-dimensional ultracold Fermi gas
J. Tempere, S. N. Klimin
The interplay between dimensionality, coherence and interaction in superfluid Fermi gases is analyzed by the phase correlation function of the field of fermionic pairs. We calculat…
Finite temperature effective field theory for dark solitons in superfluid Fermi gases
S. N. Klimin, J. Tempere, J. T. Devreese
We use a finite temperature effective field theory recently developed for superfluid Fermi gases to investigate the properties of dark solitons in these superfluids. Our approach p…
Diagrammatic Monte Carlo study of the acoustic and the BEC polaron
Jonas Vlietinck, Wim Casteels, Kris Van Houcke +3
We consider two large polaron systems that are described by a Fröhlich type of Hamiltonian, namely the Bose-Einstein condensate (BEC) polaron in the continuum and the acoustic pola…
Bipolarons and multi-polarons consisting of impurity atoms in a Bose-Einstein condensate
W. Casteels, J. Tempere, J. T. Devreese
The variational Feynman formalism for the polaron, extended to an all-coupling treatment of bipolarons, is applied for two impurity atoms in a Bose-Einstein condensate. This shows…
Effects of spin-orbit coupling on the Berezinskii-Kosterlitz-Thouless transition and the vortex-antivortex structure in two-dimensional Fermi gases
Jeroen P. A. Devreese, Jacques Tempere, Carlos A. R. Sá de Melo
We investigate the Berezinskii-Kosterlitz-Thouless (BKT) transition in a two-dimensional (2D) Fermi gas with spin-orbit coupling (SOC), as a function of the two-body binding energy…