Non-Abelian Optical Lattices: Anomalous Quantum Hall Effect and Dirac Fermions
Non-Abelian Optical Lattices: Anomalous Quantum Hall Effect and Dirac Fermions
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DOI：
10.1103/physrevlett.103.035301
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发表时间：
2009-07-17
影响因子：
8.6
通讯作者：
Martin-Delgado, M. A.
中科院分区：
文献类型：
--
作者：
Goldman, N.;Kubasiak, A.;Martin-Delgado, M. A.
研究了超冷费米气体在非阿贝尔规范场作用下的性质。我们表明，这个系统可以被利用作为相对论量子电动力学的光学模拟，提供了一个显着的路线来访问的奇异性质的无质量狄拉克费米子冷原子实验。特别是，我们表明，潜在的闵可夫斯基时空也可以修改，达到各向异性制度，一个显着的反常量子霍尔效应和压缩朗道真空可以观察到。
We study the properties of an ultracold Fermi gas loaded in an optical square lattice and subjected to an external and classical non-Abelian gauge field. We show that this system can be exploited as an optical analogue of relativistic quantum electrodynamics, offering a remarkable route to access the exotic properties of massless Dirac fermions with cold atoms experiments. In particular, we show that the underlying Minkowski space-time can also be modified, reaching anisotropic regimes where a remarkable anomalous quantum Hall effect and a squeezed Landau vacuum could be observed.