Superfluidity of the 1D Bose gas
Year: 2004
Authors: Carusotto I., Castin Y.
Autors Affiliation: Ecole Normale Super, Lab Kastler Brossel, F-75231 Paris 05, France; BEC INFM Res & Dev Ctr, Trento, Italy.
Abstract: We have investigated the superfluid properties of a ring of weakly interacting and degenerate 1D Bose gas at thermal equilibrium with a rotating vessel. The conventional definition of superfluidity predicts that the gas has a significant superfluid fraction only in the Bose condensed regime. In the opposite regime, it is found that a superfluid behaviour can still be identified when the probability distribution of the total momentum of the gas has a multi-peaked structure, revealing unambiguously the existence of ’superfluid’ supercurrent states that did not show up in the conventional definition of superfluidity. (C) 2004 Academie des sciences. Published by Elsevier SAS. All rights reserved.
Journal/Review: COMPTES RENDUS PHYSIQUE
Volume: 5 (1) Pages from: 107 to: 127
More Information: We acknowledge useful discussions with Anthony Leggett, Jean Dalibard, Lev Pitaevskii. I.C. acknowledges a Marie Curie grant from the EU under contract number HPMF-CT-2000-00901. Laboratoire Kastler Brossel is a Unité de Recherche de l’École Normale Supérieure et de l’Université Paris 6, associée au CNRS.KeyWords: superfluidity; one-dimensional; Bose gasDOI: 10.1016/j.crhy.2004.01.007Citations: 10data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-11-17References taken from IsiWeb of Knowledge: (subscribers only)