226 citations · 590 across the 6 of their papers we have counts for
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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…
Strong coupling treatment of the polaronic system consisting of an impurity in a condensate
W. Casteels, T. Van Cauteren, J. Tempere +1
The strong coupling treatment of the Fröhlich-type polaronic system, based on a canonical transformation and a standard Landau-Pekar type variational wave function, is applied to t…
Feynman path-integral treatment of the BEC-impurity polaron
J. Tempere, W. Casteels, M. K. Oberthaler +2
The description of an impurity atom in a Bose-Einstein condensate can be cast in the form of Frohlich's polaron Hamiltonian, where the Bogoliubov excitations play the role of the p…