Exotic superfluidity in spin-orbit coupled Bose-Einstein condensates
Exotic superfluidity in spin-orbit coupled Bose-Einstein condensates
复制标题
自旋轨道耦合玻色-爱因斯坦凝聚中的奇异超流性
DOI:
10.1209/0295-5075/100/50003
复制
发表时间:
2011-09
期刊:
影响因子:
1.8
通讯作者:
Wu, Biao
中科院分区:
文献类型:
--
作者:
Zhu, Qizhong;Zhang, Chuanwei;Wu, Biao
We study the superfluidity of a spin-orbit coupled Bose-Einstein condensate (BEC) by computing its Bogoliubov excitations, which are found to have two branches: one is gapless and phonon-like at long wavelength; the other is typically gapped. These excitations imply superfluidity that has two new features: i) due to the absence of the Galilean invariance, one can no longer define the critical velocity of superfluidity independent of the reference frame; ii) the superfluidity depends not only on whether the speed of the BEC exceeds a critical value, but also on cross-helicity that is defined as the direction of the cross-product of the spin and the kinetic momentum of the BEC.
登录
查看更多内容
DOI:
10.1088/0954-3899/40/5/053101
发表时间:
2013-03
期刊:
arXiv: Nuclear Theory
影响因子:
--
作者:
N. Zinner;A. Jensen
通讯作者:
N. Zinner;A. Jensen
影响因子:
2.9
作者:
A. Yulin;Y. Bludov;V. Konotop;V. Kuzmiak;M. Salerno
通讯作者:
A. Yulin;Y. Bludov;V. Konotop;V. Kuzmiak;M. Salerno
DOI:
10.5772/intechopen.87908
发表时间:
1949
期刊:
--
影响因子:
--
作者:
Schiff Bandhyopadhyay
通讯作者:
Schiff Bandhyopadhyay
DOI:
10.1142/9789813228658_0003
发表时间:
1966
期刊:
--
影响因子:
--
作者:
K. Gottfried
通讯作者:
K. Gottfried
DOI:
10.1119/1.17836
发表时间:
1993-12
期刊:
--
影响因子:
--
作者:
S. Mcmurry;A. Someren
通讯作者:
S. Mcmurry;A. Someren