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arXiv · 1407.3568

Superfluid behavior of a Bose-Einstein condensate in a random potential

M. Könenberg·T. Moser·R. Seiringer·J. Yngvason
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Abstract

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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M. Könenberg, T. Moser, R. Seiringer, J. Yngvason. 2014-07-14. Superfluid behavior of a Bose-Einstein condensate in a random potential. https://doi.org/10.1088/1367-2630/17/1/013022

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