Non-Abelian Optical Lattices: Anomalous Quantum Hall Effect and Dirac Fermions

作者：Goldman N^*; Kubasiak A; Bermudez A; Gaspard P; Lewenstein M; Martin Delgado M A

来源：Physical Review Letters, 2009, 103(3): 035301.

DOI：10.1103/PhysRevLett.103.035301

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.

• 出版日期2009-7-17