arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1306.4266cond-mat.quant-gas
收藏

酉费米气体中的量子化超流涡环

Quantized Superfluid Vortex Rings in the Unitary Fermi Gas

Aurel Bulgac, Michael McNeil Forbes, Michelle M. Kelley, Kenneth J. Roche, Gabriel Wlazłowski

摘要:

在最近的一篇文章中,Yefsah等人[Nature 499,426(2013)]报道了在细长的谐波捕获的酉费米气体中观察到不寻常的激发。在相印域壁后,他们观察到的振荡几乎比任何域壁理论预测的要慢一个数量级,他们将其解释为惯性质量比自由费米子质量大200倍或比域壁预期大50倍的“重孤子”。我们提出了令人信服的证据表明,这个“孤子”,而不是一个量子化的涡环,实验的主要方面可以自然地解释的框架内的时间依赖性超流DFT。

英文摘要:

In a recent article, Yefsah et al. [Nature 499, 426 (2013)] report the observation of an unusual excitation in an elongated harmonically trapped unitary Fermi gas. After phase imprinting a domain wall, they observe oscillations almost an order of magnitude slower than predicted by any theory of domain walls which they interpret as a "heavy soliton" of inertial mass some 200 times larger than the free fermion mass or 50 times larger than expected for a domain wall. We present compelling evidence that this "soliton" is instead a quantized vortex ring by showing that the main aspects of the experiment can be naturally explained within the framework of time-dependent superfluid DFT.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑