Nonlinear Bloch-Zener oscillations for Bose-Einstein condensates in a Lieb optical lattice

We investigate Bloch–Zener oscillations and mean-field Bloch bands of a Bose–Einstein condensate (BEC) in a Lieb optical lattice. We find that the atomic interaction will break the point group symmetry of the system, leading to the destruction of the Dirac cone structure, while the flat band is pres...

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Bibliographic Details
Published in:	New Journal of Physics
Main Authors:	Peng He, Zhi Li
Format:	Article
Language:	English
Published:	IOP Publishing 2020-01-01
Subjects:	Bose–Einstein condesates optical lattice nonlinear band structure
Online Access:	https://doi.org/10.1088/1367-2630/ab8e59

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