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超冷快速旋转偶极费米气体中的分数量子霍尔态

Fractional quantum Hall states in ultracold rapidly rotating dipolar fermi gases.

作者信息

Baranov M A, Osterloh Klaus, Lewenstein M

机构信息

Institute for Theoretical Physics, University of Hannover, Appelstrasse 2, 30167 Hannover, Germany.

出版信息

Phys Rev Lett. 2005 Feb 25;94(7):070404. doi: 10.1103/PhysRevLett.94.070404. Epub 2005 Feb 24.

Abstract

We demonstrate the experimental feasibility of incompressible fractional quantum Hall-like states in ultracold two-dimensional rapidly rotating dipolar Fermi gases. In particular, we argue that the state of the system at filling fraction nu = 1/3 is well described by the Laughlin wave function and find a substantial energy gap in the quasiparticle excitation spectrum. Dipolar gases, therefore, appear as natural candidates of systems that allow us to realize these very interesting highly correlated states in future experiments.

摘要

我们展示了在超冷二维快速旋转偶极费米气体中实现类似不可压缩分数量子霍尔态的实验可行性。特别地,我们认为填充因子ν = 1/3时系统的状态可以用劳克林波函数很好地描述,并在准粒子激发谱中发现了一个可观的能隙。因此,偶极气体似乎是未来实验中能够让我们实现这些非常有趣的高度关联态的自然候选系统。

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