证明共振性相互作用费米气体液态理论性质
软凝聚态物质
2009-11-10 v2 强关联电子
超导电性
摘要
我们观察到在磁场正好位于费米子-费米子洞共振位置（即两种费米子间不存在束缚态）下的受约束退火费米气体的集体振荡。该气体在径向呼吸模中表现出频率为 2837(05) Hz 的共振频率，这与基于单位相互作用的流体模型预测的频率 Hz 频率相符。测得的衰减时间和频率与无碰撞均场 regime 以及碰撞流体动力学的预测均不一致。这些观察结果首次提供了共振性相互作用费米气体中液态流体动力学的证据。
引用
@article{arxiv.cond-mat/0403540,
title = {Evidence for Superfluidity in a Resonantly Interacting Fermi Gas},
author = {J. Kinast and S. L. Hemmer and M. E. Gehm and A. Turlapov and J. E. Thomas},
journal= {arXiv preprint arXiv:cond-mat/0403540},
year = {2009}
}
备注
5 pages, ReVTeX4, 2 eps figs. Resubmitted to PRL in response to referees' comments. Title and abstract changed. Corrected error in Table 1, atom numbers for 0.33 TF and 0.5 TF data were interchanged. Corrected typo in ref 3. Added new figure of damping time versus temperature