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2019 Programme


Breathing Mode of a Hydrodynamically Compressed Bose-Einstein Condensate

Prof. Jook Walraven

University of Amsterdam, The Netherlands

10.00am Monday 18 March 2019
Virtual Reality Theatre, AR Building, Hawthorn


We investigate the fundamental breathing mode of a small-sized elongated Bose-Einstein condensate coupled to a large Fermi sea of atoms. Our observations show a dramatic increase of the breathing frequency when the mixture undergoes phase separation at strong interspecies repulsion. We interpret the experimental observations within a model that assumes an adiabatic response of the surrounding Fermi sea. For complete phase separation the Bose-Einstein condensate is compressed hydrodynamically by the Fermi pressure acting on the interface.

About the speaker:

Prof Jook Walraven is an Emeritus Professor of Physics at the Van der Waals-Zeeman Institute for Experimental Physics at the University of Amsterdam. Both his doctoral research and PhD research was with Isaac Silvera on the subject of Bose-Einstein Condensation. In 2005 Jook was elected a fellow of the American Physical Society for his pioneering experimental and theoretical contributions to the physics of quantum gases.

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2019 Programme