402 citations · 2.3k across the 85 of their papers we have counts for
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Extension of the Ginzburg - Landau approach for ultracold Fermi gases below a critical temperature
S. N. Klimin, J. Tempere, J. T. Devreese
In the context of superfluid Fermi gases, the Ginzburg - Landau (GL) formalism for the macroscopic wave function has been successfully extended to the whole temperature range where…
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…
Finite temperature effective field theory and two-band superfluidity in Fermi gases
S. N. Klimin, J. Tempere, G. Lombardi +1
We develop a description of fermionic superfluids in terms of an effective field theory for the pairing order parameter. Our effective field theory improves on the existing Ginzbur…
Polaronic properties of an impurity in a Bose-Einstein condensate in reduced dimensions
W. Casteels, J. Tempere, J. T. Devreese
The application of optical lattices allows a tuning of the geometry of Bose-Einstein condensates to effectively reduced dimensions. In the context of solid state physics the consid…
Many-polaron description of impurities in a Bose-Einstein condensate in the weak coupling regime
W. Casteels, J. Tempere, J. T. Devreese
The weak coupling many-polaron formalism is applied to the case of the polaronic system consisting of impurities in a Bose-Einstein condensate. This allows to investigate the groun…