Superfluidity of the 1D Bose gas

被引：11
作者：
Carusotto, I
Castin, Y
机构：
[1] Ecole Normale Super, Lab Kastler Brossel, F-75231 Paris 05, France
[2] BEC INFM Res & Dev Ctr, Trento, Italy
来源：
COMPTES RENDUS PHYSIQUE | 2004年 / 5卷 / 01期
关键词：
superfluidity; one-dimensional; Bose gas;
D O I：
10.1016/j.crhy.2004.01.007
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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.
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收藏
页码：107 / 127
页数：21
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