SU(3) spin-orbit coupled fermions in an optical lattice |
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| Authors: | Xiaofan Zhou Gang Chen Suo-Tang Jia |
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| Affiliation: | 1.State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China;2.Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China;3.Collaborative Innovation Center of Light Manipulations and Applications, Shandong Normal University, Jinan 250358, China |
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| Abstract: | We propose a scheme to realize the SU(3) spin-orbit coupled three-component fermions in an one-dimensional optical lattice. The topological properties of the single-particle Hamiltonian are studied by calculating the Berry phase, winding number and edge state. We also investigate the effects of the interaction on the ground-state topology of the system, and characterize the interaction-induced topological phase transitions, using a state-of-the-art density-matrix renormalization-group numerical method. Finally, we show the typical features of the emerging quantum phases, and map out the many-body phase diagram between the interaction and the Zeeman field. Our results establish a way for exploring novel quantum physics induced by the SOC with SU(N) symmetry. |
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| Keywords: | spin-orbit coupling topological phase transition optical lattice |
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