caa a22 4500 445365706 CHVBK 20180317142929.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1007/s10909-010-0286-0 doi (NATIONALLICENCE)springer-10.1007/s10909-010-0286-0 Polaronic Properties of an Ion in a Bose-Einstein Condensate in the Strong-Coupling Limit [Elektronische Daten] [W. Casteels, J. Tempere, J. Devreese] Cold atoms can be used to model the Fröhlich polaron Hamiltonian using an impurity in a condensate. To probe the strong-coupling regime (which remains elusive in the solid state) charged impurities can be better suited that neutral impurities. However, the ion-atom interaction leads to a stronger depletion of the condensate as compared to the depletion from interaction with neutral impurities, and a good correspondence between the Fröhlich Hamiltonian and the cold atom system is only possible when the Bogoliubov approximation is valid. We use a strong-coupling variational approach to estimate an upper limit to the ion-atom coupling strength (expressed through a dimensionless coupling constant). The all-coupling path integral approach is used to estimate the values of the coupling constant that would need to be reached to probe the strong-coupling polaron physics. From these two approaches, we identify a regime where ions in condensates can model strong-coupling polarons and we calculate ground state properties in this regime. Springer Science+Business Media, LLC, 2010 Polarons nationallicence Bose-Einstein condensate nationallicence Casteels W. TQC, Universiteit Antwerpen, Groenenborgerlaan 171, 2020, Antwerpen, Belgium aut Tempere J. TQC, Universiteit Antwerpen, Groenenborgerlaan 171, 2020, Antwerpen, Belgium aut Devreese J. TQC, Universiteit Antwerpen, Groenenborgerlaan 171, 2020, Antwerpen, Belgium aut Journal of Low Temperature Physics Springer US; http://www.springer-ny.com 162/3-4(2011-02-01), 266-273 0022-2291 162:3-4<266 2011 162 10909 https://doi.org/10.1007/s10909-010-0286-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10909-010-0286-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Casteels W. TQC, Universiteit Antwerpen, Groenenborgerlaan 171, 2020, Antwerpen, Belgium aut NATIONALLICENCE 700 1- Tempere J. TQC, Universiteit Antwerpen, Groenenborgerlaan 171, 2020, Antwerpen, Belgium aut NATIONALLICENCE 700 1- Devreese J. TQC, Universiteit Antwerpen, Groenenborgerlaan 171, 2020, Antwerpen, Belgium aut NATIONALLICENCE 773 0- Journal of Low Temperature Physics Springer US; http://www.springer-ny.com 162/3-4(2011-02-01), 266-273 0022-2291 162:3-4<266 2011 162 10909 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer