Superfluid behavior of a Bose–Einstein condensate in a random potential
- Könenberg, M (Department of Mathematics and Statistics, Memorial University)
- Moser, T (Faculty of Physics, Faculty of Physics, University of Vienna)
- Seiringer, R (Institute of Science and Technology Austria (IST Austria))
- Yngvason, J (Faculty of Physics, Faculty of Physics, University of Vienna)
Publication date
January 2015
DOI Publisher
IOP Publishing ISSN
1367-2630 Journal
ISSN: 1367-2630 Citation count (estimate)
4Abstract
We investigate the relation between Bose–Einstein condensation (BEC) and superfluidity in the ground state of a one-dimensional model of interacting bosons in a strong random potential. We prove rigorously that in a certain parameter regime the superfluid fraction can be arbitrarily small while complete BEC prevails. In another regime there is both complete BEC and complete superfluidity, despite the strong disorder
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