Superfluidity in dilute trapped Bose gases Journal Article

Author(s): Lieb, Élliott H; Seiringer, Robert; Yngvason, Jakob
Article Title: Superfluidity in dilute trapped Bose gases
Abstract: A commonly used theoretical definition of superfluidity in the ground state of a Bose gas is based on the response of the system to an imposed velocity field or, equivalently, to twisted boundary conditions in a box. We are able to carry out this program in the case of a dilute interacting Bose gas in a trap, and we prove that a gas with repulsive interactions is 100% superfluid in the dilute limit in which the Gross-Pitaevskii equation is exact. This is the first example in an experimentally realistic continuum model in which superfluidity is rigorously verified.
Journal Title: Physical Review B - Condensed Matter and Materials Physics
Volume: 66
Issue 13
ISSN: 1550-235X
Publisher: American Physical Society  
Date Published: 2002-10-01
Start Page: Article number: 134529
DOI: 10.1103/PhysRevB.66.134529
Open access: yes (repository)
IST Austria Authors
  1. Robert Seiringer
    123 Seiringer
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